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| Meta Title | Is Anthropic's Claude Mythos a big stunt, or a real security threat? What the experts say. |
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Mashable/ LG
Credit: LG Ultragear Curved Gaming Monitor deal
SAVE $723:
As of Feb. 28, Amazon has the 39-inch LG Ultragear curved gaming monitor on sale for $876, which is 45% its list price of 1,599.
Credit: LG
$876
at Amazon
$1,599
Save $723
If you’ve been dreaming of
putting together a gaming setup
with a curved monitor or wishing to upgrade your current equipment, this weekend might be the time to do it. Amazon has the
LG Ultragear 39-inch curved gaming monitor
on sale for almost half off. This model is perfect for those who want a single-screen OLED monitor with a wicked-fast frame rate and an 800R curve for true immersion. The monitor has a thick, sturdy, white base for folks who don’t mind the look of noticeable hardware.Â
Mashable Light Speed
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The screen is also expertly designed to reduce glare and reflections. This means you aren’t automatically required to find an extremely low-light location for your gaming monitor (although that can sometimes be a vibe). The sale price of this monitor makes this particular model size one of the lowest-priced OLED monitors you can buy on Amazon right now.
Han Schneider is a journalist who wants to talk about feeling better and what can help us get there. Whether that's product reviews and gift guides for the ADHD brain, deep dives into wellness trends that are actually worth their salt, or perseverating on the state of queer swimwear. Schneider has covered products and gift guides for Elite Daily, Refinery29, Allure, Best Products, Well + Good, and more. Currently, she serves as a lifestyle and wellbeing writer for hire, focusing on topics related to health, fitness, and overall wellbeing.Â
This all-genre book blast runs until April 18.
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Credit: Pexels
FREE BOOKS:
The latest Stuff Your Kindle Day takes place on April 15-18. Stuff Your E-Reader, hosted by Indie Author Collective, is offering books in a variety of genres for
Kindle
and Kobo.
A lot has been said about Kindle in the last week or so, and we've tried our best to
make sense of the situation
. We're not going to get into the weeds of why "BookTokers, Bookstagramers, and the most passionate Kindle users across the internet are
fuming
this week," because another Stuff Your Kindle Day is live right now.
Stuff Your E-Reader
, hosted by Indie Author Collective, is offering participants the chance to download books from a variety of genres without spending anything. Everything that you download is yours to keep forever, and unlike a lot of these giveaways, Kindle and Kobo readers can stock up during this limited-time event.
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When is Stuff Your Kindle Day?
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Which ebooks are free?
Stuff Your E-Reader
is an all-genre book blast for Kindle and Kobo readers. Stuff Your Kindle Days usually focus on a particular genre, which can exclude large portions of the reading world who might not be interested in downloading hundreds of romance titles. This event is truly for everyone.
The Indie Author Collective will launch a hub page for this event as soon as it goes live. Here you can find everything on offer.
Is Stuff Your Kindle Day the same as Amazon Kindle Unlimited?
Everything you download on Stuff Your Kindle Day is yours to keep, and there's no limit on the number of books you can download. Stuff Your Kindle Day downloads don't count towards the 20 books that
Amazon Kindle Unlimited
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The best Stuff Your Kindle Day deal
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Global Shopping Editor
Joseph Green is the Global Shopping Editor for Mashable. He covers VPNs, headphones, fitness gear, dating sites, streaming, and shopping events like Black Friday and Prime Day.
Joseph is also Executive Editor of Mashable's sister site, AskMen.
The federal government summoned financial leaders to an emergency meeting over Claude Mythos last week.
R.E.M. voice: Is this the end of the digital world as we know it?
Credit: Jonathan Raa/NurPhoto via Getty Images
Anthropic put the entire tech world on notice last week with an unprecedented announcement: it made an AI model so advanced that it was too dangerous to release to the public. Anthropic said the new frontier language model,
Claude Mythos Preview
, would "reshape cybersecurity."
Anthropic also announced the
formation of Project Glasswing
, an invite-only group of organizations — including some of Anthropic's biggest competitors — to test Claude Mythos Preview and secure their infrastructure.
Anthropic said that
Claude Mythos Preview
"found thousands of high-severity vulnerabilities, including some in
every major operating system and web browser
." (Emphasis in original.) The company said Project Glasswing was necessary "to help secure the world’s most critical software."
By Friday,
CNBC reported
that Federal Reserve Chairman Jerome Powell and Treasury Secretary Scott Bessent had summoned the high priests of finance (aka banking CEOs) for an emergency meeting about the new model.
New York Times
writer Thomas Friedman fretted over a "terrifying" future in which any teenager armed with Claude could hack the local power grid.
The reaction to Claude Mythos Preview quickly split along predictable lines. AI boosters hailed the new model as proof that artificial general intelligence (AGI) was nigh, praising Anthropic for rolling it out so responsibly.
Critics and AI skeptics called Project Glasswing a big publicity stunt.
So, which is it?
To find out, Mashable has been reviewing Anthropic's claims and talking to AI and cybersecurity experts.
What is Claude Mythos Preview?
Claude Mythos is a new large-language model that Anthropic says performs significantly better than Claude Opus 4.6 — widely considered one of the
best AI models in the world
— especially in cybersecurity.
"In our testing, Claude Mythos Preview demonstrated a striking leap in cyber capabilities relative to prior models, including the ability to autonomously discover and exploit zero-day vulnerabilities in major operating systems and web browsers," reads the
Claude Mythos system card
.
Is Claude Mythos a sign of AGI?
Artificial general intelligence refers to superintelligent AI that can perform better than humans across a wide range of tasks. It's not an exaggeration to say that our entire economy has been organized around
the quest for AGI
, as Anthropic, Google, Meta, xAI, and OpenAI pour hundreds of billions of dollars into a new arms race.
If Claude Mythos is as capable as Anthropic says, would it be an example of AGI? The model card addresses this question, and Anthropic does seem to think it's close to AGI.
Any major platform rollout in this era is going to look different to different audiences depending on their fluency and their fear tolerance. What I care about is whether the intent is real, and the evidence I've seen from Anthropic suggests it mostly is.
In a section about Claude Mythos safety risks, Antropic writes: "Current risks remain low. But we see warning signs that keeping them low could be a major challenge if capabilities continue advancing rapidly (e.g., to the point of strongly superhuman AI systems)." Of course, Anthropic has a strong financial incentive to promote this belief.
This chart shows how Mythos compares to previous Anthropic models on the Epoch Capabilities Index (ECI), which combines multiple benchmark scores into one.
Credit: Anthropic
Ultimately, the model card for Claude Mythos is more conservative than the reaction online would suggest.
For example, while the Claude Mythos model card
does
show that this model performs above the trend line for previous Anthropic models, Anthropic says it does
not
show evidence of self-improvement or recursive growth. ("Importantly, though we’re observing a slope change with Claude Mythos Preview, we do not know if this trend will continue with future models...The gains we can identify are confidently attributable to human research, not AI assistance.")
Reasons to think Project Glasswing is a publicity stunt
Don't make me tap my sign: "[When] an AI salesman tells you that AI is an unstoppable world-changing technology on the order of the agricultural revolution...you should take this prediction for what it is: a sales pitch."
I wrote those words of caution in
response to an essay by Anthropic CEO Dario Amodei
, which warned about the potentially cataclysmic dangers of AI. Anthropic also has a history of issuing dire warnings about its AI models.
You may remember the story of the Anthropic model that tried to "blackmail" a company CEO to prevent it from being turned off. In reality,
Anthropic designed a test environment
where blackmail was a potential outcome. This may be more akin to digital entrapment than genuine model misbehavior.
So, is Claude Mythos the latest example of
the industry's Chicken Little problem
?
On X, AI safety engineer
Heidy Khlaaf
listed a number of open questions that cast doubt on Anthropic's claims.
This Tweet is currently unavailable. It might be loading or has been removed.
Anthropic said the Claude Mythos preview found thousands of zero-day vulnerabilities. But Khlaaf says Anthropic left out key facts needed to assess this claim — the rate of false positives, how Claude Mythos compares to existing cybersecurity tools, and exactly how much manual human review was required.
"Releasing a marketing post with purposely vague language that clearly obscures evidence needed to substantiate Anthropic's claims brings into question if they are trying to garner further investment," Khlaaf told Mashable. "It also serves their 'safety first' image as they're able to frame the lack of public release, even a limited one for independent evaluation, as a public service when it simply obscures even experts' abilities to validate their claims."
We reached out to Anthropic repeatedly about these concerns, but the company did not respond. We will update this article if they do. In the Claude Mythos system card, Anthropic wrote that more data will be released in the coming weeks as the bugs Mythos found are patched and fixed.
Gary Marcus
, an AI expert, scientist, author, and noted critic of the LLM hype machine, initially told Mashable that it was too soon to know whether Claude Mythos represented a new type of threat.
But Marcus has grown more skeptical since we spoke to him, and he recently
wrote on X
that Mythos was "nowhere near as scary" as it first seemed. "Folks, you can relax. Mythos is not some off-trend exponential gain," he
wrote
.
This Tweet is currently unavailable. It might be loading or has been removed.
Cybersecurity experts told Mashable it's also very unlikely Claude Mythos could be used to "turn off the lights" or bring down critical infrastructure.
"Claims about catastrophic uses of Mythos also significantly misunderstand threat models, cybersecurity risks, and the ability to propagate said risks in a way that could actually lead to safety-critical incidents," Khlaaf told us. "It's not as simple as asking a model 'hack this system,' with Anthropic's ownÂ
technical blog post
 demonstrating a requisite of expertise that Anthropic downplays in their marketing posts."
Other experts expressed skepticism, while also acknowledging that Mythos does represent a genuine risk, which Marcus has also said.
"You could argue it didn’t need a public announcement," said
Div Garg
, a Stanford AI researcher and founder of
 AGI, Inc.
"However, ultimately, the decision to limit access to only those who develop and maintain critical software is precisely what you want a business to do in such a scenario…It’s easy to criticize the limited access, but worse outcomes would arise if they released it unchecked."
Tal Kollender, Founder and CEO of cybersecurity firm
Remedio
, told Mashable that tools like Claude Mythos are dangerous because they can automate exploit discovery.
"It's brilliant corporate theater," Kolender said. "Labeling a model 'too dangerous to release to the public' is certainly a marketing flex because it immediately creates mystique and signals immense power to investors. But beneath the PR stunt, there is a very real, very mundane truth...The cybersecurity industry doesn't actually have a 'finding' problem. We are already drowning in tools that detect vulnerabilities. What Mythos does is automate that discovery process at an unprecedented scale."
TL;DR:
A week after revealing Claude Mythos Preview, some of Anthropic's biggest claims about the model look a lot sketchier, experts say. However, they also acknowledge that Claude Mythos poses a real risk.
Still, there are plenty of very valid reasons to be nervous about the new frontier model.
Reasons to think Claude Mythos Preview
is
a genuine threat to global cybersecurity
In the
New York Times
, author Thomas Friedman conjures a scenario straight out of
War Games
, where a teenager hacks the local power grid after school.
That scenario seems even more far-fetched a week later. But here's a much more likely scenario: A sophisticated group of hackers uses a tool like Claude Mythos to find zero-day vulnerabilities in our digital infrastructure, launching attacks faster than organizations can respond.
And that scenario should worry you.
If Claude Mythos isn't the tool that can do it, most experts agree such a tool isn't far off.
And some of the world's leading cybersecurity experts certainly seem worried.
"I've found more bugs in the last couple of weeks [with Claude Mythos] than in the rest of my entire life combined," said Nicholas Carlini, a research scientist affiliated with Anthropic and Google DeepMind, in a video on the
Project Glasswing website
.
"On Linux, we found a number of vulnerabilities where, as a user with no permissions, I can elevate myself to the administrator by just running some binary on my machine," Carlini said.
This week, the
AI Security Institute
published its findings on Claude Mythos's capabilities, and it provides some independent verification that it does represent a genuine leap forward.
The AISI is research organization within the UK government's science and technology department.
Credit: AISI
Claude Mythos passed AISI cybersecurity tests that no other model had ever completed, scoring higher than any other frontier model on virtually every test.
"Our testing shows that Mythos Preview can exploit systems with weak security posture, and it is likely that more models with these capabilities will be developed," AISI concluded.
This Tweet is currently unavailable. It might be loading or has been removed.
AISI also identified some limitations with Claude Mythos, which would impair its effectiveness in real-world scenarios.
So, was Anthropic’s rollout of Mythos responsible AI stewardship or self-serving marketing? Experts I talked to said these options aren’t mutually exclusive.
"I'd say it's both, and that's not a criticism," said
Howie Xu
, Gen's Chief AI & Innovation Officer. "Any major platform rollout in this era is going to look different to different audiences depending on their fluency and their fear tolerance. What I care about is whether the intent is real, and the evidence I've seen from Anthropic suggests it mostly is."
As is often the case with fear-inducing AI headlines, the reality turned out to be more complicated.
"Personally, I don't go to bed worrying about a kid with Mythos hacking the power grid, but that doesn't mean the concern is fictional," said Xu. "We're at an inflection point where the creative and collaborative upside of these tools is massive, and the security infrastructure hasn't caught up. That gap is exactly what keeps me busy. Even a fractional probability of a serious incident is too much, which is why building a trust and security layer into the agentic era is my extreme focus."
Finally, as Anthropic stresses in the Claude Mythos model card, tools like this will likely benefit cybersecurity defenders more than hackers in the long-term. And in the short-term, a more cautious approach — like the approach being modeled with Project Glasswing — may be warranted.
TL;DR:
Claude Mythos has formidable cybersecurity coding abilities, and it does represent a genuine threat. However, if hackers have access to AI tools like Claude Mythos, so will the organizations defending against such attacks.
UPDATE: Apr. 14, 2026, 9:40 p.m. EDT
This article has been updated with additional information about some of the cited experts.
Tech Editor
Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men’s grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he’s also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl.
Tim studied print journalism at the University of Southern California. He currently splits his time between Brooklyn, NY and Charleston, SC. He's currently working on his second novel, a science-fiction book. |
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# Amazon has a 39-inch LG Ultragear Curved Gaming Monitor on sale for almost half off
The monitor is big enough to feel immersive but not so massive that it’s overwhelming.
By
[Han Schneider](https://mashable.com/author/han-schneider)

Han Schneider
Han Schneider is a journalist who wants to talk about feeling better and what can help us get there. Whether that's product reviews and gift guides for the ADHD brain, deep dives into wellness trends that are actually worth their salt, or perseverating on the state of queer swimwear. Schneider has covered products and gift guides for Elite Daily, Refinery29, Allure, Best Products, Well + Good, and more. Currently, she serves as a lifestyle and wellbeing writer for hire, focusing on topics related to health, fitness, and overall wellbeing.
[Read Full Bio](https://mashable.com/author/han-schneider)
on
February 28, 2026
[Share on Facebook](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal "(opens in a new window)")
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Mashable/ LG Credit: LG Ultragear Curved Gaming Monitor deal
***
**SAVE \$723:** As of Feb. 28, Amazon has the 39-inch LG Ultragear curved gaming monitor on sale for \$876, which is 45% its list price of 1,599.
***
[ Opens in a new window](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=shop-card&element=offer&item=image&element_label=image&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)")
Credit: LG
[LG 39GX90SA-W 39-inch Ultragear OLED Curved Gaming](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=shop-card&element=offer&item=title&element_label=LG+39GX90SA-W+39-inch+Ultragear++OLED+Curved+Gaming&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)")
\$876 at Amazon
\$1,599 Save \$723
[Get Deal](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=shop-card&element=offer&item=buy-button&element_label=Get+Deal&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)")
If you’ve been dreaming of [putting together a gaming setup](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=putting+together+a+gaming+setup&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") with a curved monitor or wishing to upgrade your current equipment, this weekend might be the time to do it. Amazon has the [LG Ultragear 39-inch curved gaming monitor](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=LG+Ultragear+39-inch+curved+gaming+monitor&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") on sale for almost half off. This model is perfect for those who want a single-screen OLED monitor with a wicked-fast frame rate and an 800R curve for true immersion. The monitor has a thick, sturdy, white base for folks who don’t mind the look of noticeable hardware.
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Unlike other monitors meant only for running whatever you plug into them, [this model has webOS 24](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=this+model+has+webOS+24%C2%A0&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") with access to your favorite streaming services built in. This means you could take a break from work or gaming and binge your favorite shows.
***
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***
- [This weekend Amazon has this Samsung 57” Odyssey Neo G9 curved gaming monitor on sale for 36% off](https://mashable.com/article/feb-28-samsung-odyssey-neo-g9-monitor-deal)
- [Score Asus's burn-in-proof 34-inch OLED gaming monitor for a record-low price](https://mashable.com/article/feb-27-asus-gaming-monitor-deal)
- [Hands-on: The RayNeo Air 4 Pro smart glasses are like wearing an OLED TV on my face](https://mashable.com/article/rayneo-air-4-pro-smart-glasses-hands-on-review)
***
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***
***
The screen is also expertly designed to reduce glare and reflections. This means you aren’t automatically required to find an extremely low-light location for your gaming monitor (although that can sometimes be a vibe). The sale price of this monitor makes this particular model size one of the lowest-priced OLED monitors you can buy on Amazon right now.
Topics [Gaming](https://mashable.com/category/gaming)

Han Schneider
Han Schneider is a journalist who wants to talk about feeling better and what can help us get there. Whether that's product reviews and gift guides for the ADHD brain, deep dives into wellness trends that are actually worth their salt, or perseverating on the state of queer swimwear. Schneider has covered products and gift guides for Elite Daily, Refinery29, Allure, Best Products, Well + Good, and more. Currently, she serves as a lifestyle and wellbeing writer for hire, focusing on topics related to health, fitness, and overall wellbeing.

[Home](https://mashable.com/) \> [Tech](https://mashable.com/tech)
# A huge Stuff Your Kindle Day is live this week — score hundreds of free books for Kindle and Kobo
This all-genre book blast runs until April 18.
By
[Joseph Green](https://mashable.com/author/joe92)

Joseph Green
Global Shopping Editor
Joseph Green is the Global Shopping Editor for Mashable. He covers VPNs, headphones, fitness gear, dating sites, streaming, and shopping events like Black Friday and Prime Day.
[Read Full Bio](https://mashable.com/author/joe92)
on
April 15, 2026
[Share on Facebook](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fmashable.com%2Farticle%2Fstuff-your-e-reader-day "(opens in a new window)")
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[Share on Flipboard](https://share.flipboard.com/bookmarklet/popout?v=2&url=https%3A%2F%2Fmashable.com%2Farticle%2Fstuff-your-e-reader-day&title=A+huge+Stuff+Your+Kindle+Day+is+live+this+week+%E2%80%94+score+hundreds+of+free+books+for+Kindle+and+Kobo "(opens in a new window)")
All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission.

Credit: Pexels
***
Deal pricing and availability subject to change after time of publication. Learn more about [how we select deals](https://mashable.com/about/deals-coverage-explained).
**FREE BOOKS:** The latest Stuff Your Kindle Day takes place on April 15-18. Stuff Your E-Reader, hosted by Indie Author Collective, is offering books in a variety of genres for [Kindle](https://www.mashable.com/roundup/best-kindles) and Kobo.
***
A lot has been said about Kindle in the last week or so, and we've tried our best to [make sense of the situation](https://mashable.com/article/should-you-switch-to-a-kobo-kindle-discontinuation). We're not going to get into the weeds of why "BookTokers, Bookstagramers, and the most passionate Kindle users across the internet are [fuming](https://mashable.com/article/amazon-kindle-support-ending-backlash-outrage) this week," because another Stuff Your Kindle Day is live right now.
[Stuff Your E-Reader](https://www.indieauthorcollective.com/stuff-your-ereader "(opens in a new window)"), hosted by Indie Author Collective, is offering participants the chance to download books from a variety of genres without spending anything. Everything that you download is yours to keep forever, and unlike a lot of these giveaways, Kindle and Kobo readers can stock up during this limited-time event.
SEE ALSO:
[I tested the best Kindles to help you find the perfect e-reader](https://mashable.com/roundup/best-kindles)
Looking to make the most of the latest [Stuff Your Kindle Day](https://mashable.com/article/when-is-stuff-your-kindle-day)? We've lined up everything you need to know about this popular event.
## When is Stuff Your Kindle Day?
[Stuff Your E-Reader](https://www.indieauthorcollective.com/stuff-your-ereader "(opens in a new window)") takes place on April 15-18. A lot of these free giveaways only last 24 hours, so it's refreshing to have so much time to consider your options. You can relax and make a plan without stressing about missing the deadline.
## Which ebooks are free?
[Stuff Your E-Reader](https://www.indieauthorcollective.com/stuff-your-ereader "(opens in a new window)") is an all-genre book blast for Kindle and Kobo readers. Stuff Your Kindle Days usually focus on a particular genre, which can exclude large portions of the reading world who might not be interested in downloading hundreds of romance titles. This event is truly for everyone.
The Indie Author Collective will launch a hub page for this event as soon as it goes live. Here you can find everything on offer.
## Is Stuff Your Kindle Day the same as Amazon Kindle Unlimited?
Everything you download on Stuff Your Kindle Day is yours to keep, and there's no limit on the number of books you can download. Stuff Your Kindle Day downloads don't count towards the 20 books that [Amazon Kindle Unlimited](https://zdcs.link/1Gowx?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=Amazon+Kindle+Unlimited&object_type=article&object_uuid=07D4Oj9AeN4zAysyt5RiVRG&short_url=1Gowx&u=https%3A%2F%2Fmashable.com%2Farticle%2Fstuff-your-e-reader-day&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") subscribers can borrow at the same time.
## The best Stuff Your Kindle Day deal
[ Opens in a new window](https://zdcs.link/9Ydp4o?pageview_type=Standard&template=article&module=shop-card&element=offer&item=image&element_label=image&object_type=article&object_uuid=07D4Oj9AeN4zAysyt5RiVRG&short_url=9Ydp4o&u=https%3A%2F%2Fmashable.com%2Farticle%2Fstuff-your-e-reader-day&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)")
Credit: Amazon
[Kindle (16GB) + Kindle Unlimited (3 Months)](https://zdcs.link/9Ydp4o?pageview_type=Standard&template=article&module=shop-card&element=offer&item=title&element_label=Kindle+%2816GB%29+%2B+Kindle+Unlimited+%283+Months%29&object_type=article&object_uuid=07D4Oj9AeN4zAysyt5RiVRG&short_url=9Ydp4o&u=https%3A%2F%2Fmashable.com%2Farticle%2Fstuff-your-e-reader-day&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)")
\$109.99 at Amazon
[Shop Now](https://zdcs.link/9Ydp4o?pageview_type=Standard&template=article&module=shop-card&element=offer&item=buy-button&element_label=Get+Deal&object_type=article&object_uuid=07D4Oj9AeN4zAysyt5RiVRG&short_url=9Ydp4o&u=https%3A%2F%2Fmashable.com%2Farticle%2Fstuff-your-e-reader-day&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)")
### Why we like it
These [popular e-readers](https://mashable.com/roundup/best-e-readers) let you take your entire library on the go. With weeks of battery life and an anti-glare display, you can read anywhere and anytime with the [Kindle](https://mashable.com/review/amazon-kindle-2022-release). Plus, you can get three months of Kindle Unlimited for free with your purchase for a limited time.
Topics [Amazon](https://mashable.com/category/amazon) [Books](https://mashable.com/category/books)

Joseph Green
Global Shopping Editor
Joseph Green is the Global Shopping Editor for Mashable. He covers VPNs, headphones, fitness gear, dating sites, streaming, and shopping events like Black Friday and Prime Day.
Joseph is also Executive Editor of Mashable's sister site, AskMen.

[Home](https://mashable.com/) \> [Tech](https://mashable.com/tech)
# Is Anthropic's Claude Mythos a big stunt, or a real security threat? What the experts say.
The federal government summoned financial leaders to an emergency meeting over Claude Mythos last week.
By
[Timothy Beck Werth](https://mashable.com/author/timothy-beck-werth)

Timothy Beck Werth
Tech Editor
Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men’s grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he’s also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl.
[Read Full Bio](https://mashable.com/author/timothy-beck-werth)
on
April 14, 2026
[Share on Facebook](https://www.facebook.com/sharer.php?u=https%3A%2F%2Fmashable.com%2Farticle%2Fclaude-mythos-preview-project-glasswing-pr-stunt-cybersecurity-experts "(opens in a new window)")
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R.E.M. voice: Is this the end of the digital world as we know it? Credit: Jonathan Raa/NurPhoto via Getty Images
***
Anthropic put the entire tech world on notice last week with an unprecedented announcement: it made an AI model so advanced that it was too dangerous to release to the public. Anthropic said the new frontier language model, [Claude Mythos Preview](https://mashable.com/article/antropic-pulls-mythos-ai-security-flaws), would "reshape cybersecurity."
Anthropic also announced the [formation of Project Glasswing](https://red.anthropic.com/2026/mythos-preview/ "(opens in a new window)"), an invite-only group of organizations — including some of Anthropic's biggest competitors — to test Claude Mythos Preview and secure their infrastructure.
Anthropic said that [Claude Mythos Preview](https://anthropic.com/glasswing "(opens in a new window)") "found thousands of high-severity vulnerabilities, including some in *every major operating system and web browser*." (Emphasis in original.) The company said Project Glasswing was necessary "to help secure the world’s most critical software."
By Friday, [CNBC reported](https://www.cnbc.com/2026/04/10/powell-bessent-us-bank-ceos-anthropic-mythos-ai-cyber.html "(opens in a new window)") that Federal Reserve Chairman Jerome Powell and Treasury Secretary Scott Bessent had summoned the high priests of finance (aka banking CEOs) for an emergency meeting about the new model. [*New York Times*](https://www.nytimes.com/2026/04/07/opinion/anthropic-ai-claude-mythos.html "(opens in a new window)") writer Thomas Friedman fretted over a "terrifying" future in which any teenager armed with Claude could hack the local power grid.
The reaction to Claude Mythos Preview quickly split along predictable lines. AI boosters hailed the new model as proof that artificial general intelligence (AGI) was nigh, praising Anthropic for rolling it out so responsibly.
Critics and AI skeptics called Project Glasswing a big publicity stunt.
So, which is it?
To find out, Mashable has been reviewing Anthropic's claims and talking to AI and cybersecurity experts.
### What is Claude Mythos Preview?
Claude Mythos is a new large-language model that Anthropic says performs significantly better than Claude Opus 4.6 — widely considered one of the [best AI models in the world](https://arena.ai/leaderboard/text "(opens in a new window)") — especially in cybersecurity.
"In our testing, Claude Mythos Preview demonstrated a striking leap in cyber capabilities relative to prior models, including the ability to autonomously discover and exploit zero-day vulnerabilities in major operating systems and web browsers," reads the [Claude Mythos system card](https://www-cdn.anthropic.com/08ab9158070959f88f296514c21b7facce6f52bc.pdf "(opens in a new window)").
### Is Claude Mythos a sign of AGI?
Artificial general intelligence refers to superintelligent AI that can perform better than humans across a wide range of tasks. It's not an exaggeration to say that our entire economy has been organized around [the quest for AGI](https://www.wsj.com/tech/ai/the-spiraling-cost-of-making-ai-0679bcea "(opens in a new window)"), as Anthropic, Google, Meta, xAI, and OpenAI pour hundreds of billions of dollars into a new arms race.
If Claude Mythos is as capable as Anthropic says, would it be an example of AGI? The model card addresses this question, and Anthropic does seem to think it's close to AGI.
"Any major platform rollout in this era is going to look different to different audiences depending on their fluency and their fear tolerance. What I care about is whether the intent is real, and the evidence I've seen from Anthropic suggests it mostly is. \- Howie Xu, Gen, Chief AI & Innovation Officer"
In a section about Claude Mythos safety risks, Antropic writes: "Current risks remain low. But we see warning signs that keeping them low could be a major challenge if capabilities continue advancing rapidly (e.g., to the point of strongly superhuman AI systems)." Of course, Anthropic has a strong financial incentive to promote this belief.

This chart shows how Mythos compares to previous Anthropic models on the Epoch Capabilities Index (ECI), which combines multiple benchmark scores into one. Credit: Anthropic
Ultimately, the model card for Claude Mythos is more conservative than the reaction online would suggest.
For example, while the Claude Mythos model card *does* show that this model performs above the trend line for previous Anthropic models, Anthropic says it does *not* show evidence of self-improvement or recursive growth. ("Importantly, though we’re observing a slope change with Claude Mythos Preview, we do not know if this trend will continue with future models...The gains we can identify are confidently attributable to human research, not AI assistance.")
### Reasons to think Project Glasswing is a publicity stunt
Don't make me tap my sign: "\[When\] an AI salesman tells you that AI is an unstoppable world-changing technology on the order of the agricultural revolution...you should take this prediction for what it is: a sales pitch."
I wrote those words of caution in [response to an essay by Anthropic CEO Dario Amodei](https://mashable.com/article/opinion-anthropic-ceo-dario-amodei-essay-warning-artificial-intelligence), which warned about the potentially cataclysmic dangers of AI. Anthropic also has a history of issuing dire warnings about its AI models.
You may remember the story of the Anthropic model that tried to "blackmail" a company CEO to prevent it from being turned off. In reality, [Anthropic designed a test environment](https://www.niemanlab.org/2025/05/anthropics-new-ai-model-didnt-just-blackmail-researchers-in-tests-it-tried-to-leak-information-to-news-outlets/ "(opens in a new window)") where blackmail was a potential outcome. This may be more akin to digital entrapment than genuine model misbehavior.
So, is Claude Mythos the latest example of [the industry's Chicken Little problem](https://mashable.com/article/viral-something-big-is-coming-essay-artificial-intelligence-warning)?
On X, AI safety engineer [Heidy Khlaaf](https://www.heidyk.com/ "(opens in a new window)") listed a number of open questions that cast doubt on Anthropic's claims.
> [This Tweet is currently unavailable. It might be loading or has been removed.](https://twitter.com/HeidyKhlaaf/status/2041591737563394442 "(Opens in a new tab) (opens in a new window)")
Anthropic said the Claude Mythos preview found thousands of zero-day vulnerabilities. But Khlaaf says Anthropic left out key facts needed to assess this claim — the rate of false positives, how Claude Mythos compares to existing cybersecurity tools, and exactly how much manual human review was required.
"Releasing a marketing post with purposely vague language that clearly obscures evidence needed to substantiate Anthropic's claims brings into question if they are trying to garner further investment," Khlaaf told Mashable. "It also serves their 'safety first' image as they're able to frame the lack of public release, even a limited one for independent evaluation, as a public service when it simply obscures even experts' abilities to validate their claims."
We reached out to Anthropic repeatedly about these concerns, but the company did not respond. We will update this article if they do. In the Claude Mythos system card, Anthropic wrote that more data will be released in the coming weeks as the bugs Mythos found are patched and fixed.
[Gary Marcus](https://garymarcus.substack.com/ "(opens in a new window)"), an AI expert, scientist, author, and noted critic of the LLM hype machine, initially told Mashable that it was too soon to know whether Claude Mythos represented a new type of threat.
But Marcus has grown more skeptical since we spoke to him, and he recently [wrote on X](https://x.com/GaryMarcus/status/2043754005718020552 "(opens in a new window)") that Mythos was "nowhere near as scary" as it first seemed. "Folks, you can relax. Mythos is not some off-trend exponential gain," he [wrote](https://x.com/GaryMarcus/status/2042237250889760907 "(opens in a new window)").
> [This Tweet is currently unavailable. It might be loading or has been removed.](https://twitter.com/GaryMarcus/status/2042430900789788682 "(Opens in a new tab) (opens in a new window)")
Cybersecurity experts told Mashable it's also very unlikely Claude Mythos could be used to "turn off the lights" or bring down critical infrastructure.
"Claims about catastrophic uses of Mythos also significantly misunderstand threat models, cybersecurity risks, and the ability to propagate said risks in a way that could actually lead to safety-critical incidents," Khlaaf told us. "It's not as simple as asking a model 'hack this system,' with Anthropic's own [technical blog post](https://red.anthropic.com/2026/mythos-preview/ "(opens in a new window)") demonstrating a requisite of expertise that Anthropic downplays in their marketing posts."
Other experts expressed skepticism, while also acknowledging that Mythos does represent a genuine risk, which Marcus has also said.
"You could argue it didn’t need a public announcement," said [Div Garg](https://www.linkedin.com/in/div99 "(opens in a new window)"), a Stanford AI researcher and founder of [AGI, Inc.](https://www.theagi.company/ "(opens in a new window)") "However, ultimately, the decision to limit access to only those who develop and maintain critical software is precisely what you want a business to do in such a scenario…It’s easy to criticize the limited access, but worse outcomes would arise if they released it unchecked."
Tal Kollender, Founder and CEO of cybersecurity firm [Remedio](https://remedio.io/ "(opens in a new window)"), told Mashable that tools like Claude Mythos are dangerous because they can automate exploit discovery.
"It's brilliant corporate theater," Kolender said. "Labeling a model 'too dangerous to release to the public' is certainly a marketing flex because it immediately creates mystique and signals immense power to investors. But beneath the PR stunt, there is a very real, very mundane truth...The cybersecurity industry doesn't actually have a 'finding' problem. We are already drowning in tools that detect vulnerabilities. What Mythos does is automate that discovery process at an unprecedented scale."
**TL;DR:** A week after revealing Claude Mythos Preview, some of Anthropic's biggest claims about the model look a lot sketchier, experts say. However, they also acknowledge that Claude Mythos poses a real risk.
Still, there are plenty of very valid reasons to be nervous about the new frontier model.
## Reasons to think Claude Mythos Preview *is* a genuine threat to global cybersecurity
In the [*New York Times*](https://www.nytimes.com/2026/04/07/opinion/anthropic-ai-claude-mythos.html "(opens in a new window)"), author Thomas Friedman conjures a scenario straight out of *War Games*, where a teenager hacks the local power grid after school.
That scenario seems even more far-fetched a week later. But here's a much more likely scenario: A sophisticated group of hackers uses a tool like Claude Mythos to find zero-day vulnerabilities in our digital infrastructure, launching attacks faster than organizations can respond.
And that scenario should worry you.
If Claude Mythos isn't the tool that can do it, most experts agree such a tool isn't far off.
And some of the world's leading cybersecurity experts certainly seem worried.
"I've found more bugs in the last couple of weeks \[with Claude Mythos\] than in the rest of my entire life combined," said Nicholas Carlini, a research scientist affiliated with Anthropic and Google DeepMind, in a video on the [Project Glasswing website](https://www.anthropic.com/glasswing "(opens in a new window)").
"On Linux, we found a number of vulnerabilities where, as a user with no permissions, I can elevate myself to the administrator by just running some binary on my machine," Carlini said.
This week, the [AI Security Institute](https://www.aisi.gov.uk/blog/our-evaluation-of-claude-mythos-previews-cyber-capabilities "(opens in a new window)") published its findings on Claude Mythos's capabilities, and it provides some independent verification that it does represent a genuine leap forward.

The AISI is research organization within the UK government's science and technology department. Credit: AISI
Claude Mythos passed AISI cybersecurity tests that no other model had ever completed, scoring higher than any other frontier model on virtually every test.
"Our testing shows that Mythos Preview can exploit systems with weak security posture, and it is likely that more models with these capabilities will be developed," AISI concluded.
> [This Tweet is currently unavailable. It might be loading or has been removed.](https://twitter.com/AISecurityInst/status/2043683577594794183 "(Opens in a new tab) (opens in a new window)")
AISI also identified some limitations with Claude Mythos, which would impair its effectiveness in real-world scenarios.
So, was Anthropic’s rollout of Mythos responsible AI stewardship or self-serving marketing? Experts I talked to said these options aren’t mutually exclusive.
"I'd say it's both, and that's not a criticism," said [Howie Xu](https://www.gendigital.com/us/en/leadership/ "(opens in a new window)"), Gen's Chief AI & Innovation Officer. "Any major platform rollout in this era is going to look different to different audiences depending on their fluency and their fear tolerance. What I care about is whether the intent is real, and the evidence I've seen from Anthropic suggests it mostly is."
As is often the case with fear-inducing AI headlines, the reality turned out to be more complicated.
"Personally, I don't go to bed worrying about a kid with Mythos hacking the power grid, but that doesn't mean the concern is fictional," said Xu. "We're at an inflection point where the creative and collaborative upside of these tools is massive, and the security infrastructure hasn't caught up. That gap is exactly what keeps me busy. Even a fractional probability of a serious incident is too much, which is why building a trust and security layer into the agentic era is my extreme focus."
Finally, as Anthropic stresses in the Claude Mythos model card, tools like this will likely benefit cybersecurity defenders more than hackers in the long-term. And in the short-term, a more cautious approach — like the approach being modeled with Project Glasswing — may be warranted.
**TL;DR:** Claude Mythos has formidable cybersecurity coding abilities, and it does represent a genuine threat. However, if hackers have access to AI tools like Claude Mythos, so will the organizations defending against such attacks.
***UPDATE: Apr. 14, 2026, 9:40 p.m. EDT** This article has been updated with additional information about some of the cited experts.*
Topics [Apps & Software](https://mashable.com/category/apps-software) [Artificial Intelligence](https://mashable.com/category/artificial-intelligence)

Timothy Beck Werth
Tech Editor
Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men’s grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he’s also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl.
Tim studied print journalism at the University of Southern California. He currently splits his time between Brooklyn, NY and Charleston, SC. He's currently working on his second novel, a science-fiction book.

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| Readable Markdown | The monitor is big enough to feel immersive but not so massive that it’s overwhelming.
All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission.

Mashable/ LG Credit: LG Ultragear Curved Gaming Monitor deal
**SAVE \$723:** As of Feb. 28, Amazon has the 39-inch LG Ultragear curved gaming monitor on sale for \$876, which is 45% its list price of 1,599.
***
Credit: LG
\$876 at Amazon
\$1,599 Save \$723
If you’ve been dreaming of [putting together a gaming setup](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=putting+together+a+gaming+setup&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") with a curved monitor or wishing to upgrade your current equipment, this weekend might be the time to do it. Amazon has the [LG Ultragear 39-inch curved gaming monitor](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=LG+Ultragear+39-inch+curved+gaming+monitor&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") on sale for almost half off. This model is perfect for those who want a single-screen OLED monitor with a wicked-fast frame rate and an 800R curve for true immersion. The monitor has a thick, sturdy, white base for folks who don’t mind the look of noticeable hardware.
Mashable Light Speed
Unlike other monitors meant only for running whatever you plug into them, [this model has webOS 24](https://zdcs.link/z7ROln?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=this+model+has+webOS+24%C2%A0&object_type=article&object_uuid=02krRdg9lmVMOKjvxwHYez2&short_url=z7ROln&u=https%3A%2F%2Fmashable.com%2Farticle%2Ffeb-28-lg-39-inch-ultragear-oled-curved-gaming-monitor-deal&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") with access to your favorite streaming services built in. This means you could take a break from work or gaming and binge your favorite shows.
***
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The screen is also expertly designed to reduce glare and reflections. This means you aren’t automatically required to find an extremely low-light location for your gaming monitor (although that can sometimes be a vibe). The sale price of this monitor makes this particular model size one of the lowest-priced OLED monitors you can buy on Amazon right now.

Han Schneider is a journalist who wants to talk about feeling better and what can help us get there. Whether that's product reviews and gift guides for the ADHD brain, deep dives into wellness trends that are actually worth their salt, or perseverating on the state of queer swimwear. Schneider has covered products and gift guides for Elite Daily, Refinery29, Allure, Best Products, Well + Good, and more. Currently, she serves as a lifestyle and wellbeing writer for hire, focusing on topics related to health, fitness, and overall wellbeing.

This all-genre book blast runs until April 18.
All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Mashable may earn an affiliate commission.

Credit: Pexels
**FREE BOOKS:** The latest Stuff Your Kindle Day takes place on April 15-18. Stuff Your E-Reader, hosted by Indie Author Collective, is offering books in a variety of genres for [Kindle](https://www.mashable.com/roundup/best-kindles) and Kobo.
***
A lot has been said about Kindle in the last week or so, and we've tried our best to [make sense of the situation](https://mashable.com/article/should-you-switch-to-a-kobo-kindle-discontinuation). We're not going to get into the weeds of why "BookTokers, Bookstagramers, and the most passionate Kindle users across the internet are [fuming](https://mashable.com/article/amazon-kindle-support-ending-backlash-outrage) this week," because another Stuff Your Kindle Day is live right now.
[Stuff Your E-Reader](https://www.indieauthorcollective.com/stuff-your-ereader "(opens in a new window)"), hosted by Indie Author Collective, is offering participants the chance to download books from a variety of genres without spending anything. Everything that you download is yours to keep forever, and unlike a lot of these giveaways, Kindle and Kobo readers can stock up during this limited-time event.
Looking to make the most of the latest [Stuff Your Kindle Day](https://mashable.com/article/when-is-stuff-your-kindle-day)? We've lined up everything you need to know about this popular event.
## When is Stuff Your Kindle Day?
[Stuff Your E-Reader](https://www.indieauthorcollective.com/stuff-your-ereader "(opens in a new window)") takes place on April 15-18. A lot of these free giveaways only last 24 hours, so it's refreshing to have so much time to consider your options. You can relax and make a plan without stressing about missing the deadline.
## Which ebooks are free?
[Stuff Your E-Reader](https://www.indieauthorcollective.com/stuff-your-ereader "(opens in a new window)") is an all-genre book blast for Kindle and Kobo readers. Stuff Your Kindle Days usually focus on a particular genre, which can exclude large portions of the reading world who might not be interested in downloading hundreds of romance titles. This event is truly for everyone.
The Indie Author Collective will launch a hub page for this event as soon as it goes live. Here you can find everything on offer.
## Is Stuff Your Kindle Day the same as Amazon Kindle Unlimited?
Everything you download on Stuff Your Kindle Day is yours to keep, and there's no limit on the number of books you can download. Stuff Your Kindle Day downloads don't count towards the 20 books that [Amazon Kindle Unlimited](https://zdcs.link/1Gowx?pageview_type=Standard&template=article&module=content_body&element=offer&item=text-link&element_label=Amazon+Kindle+Unlimited&object_type=article&object_uuid=07D4Oj9AeN4zAysyt5RiVRG&short_url=1Gowx&u=https%3A%2F%2Fmashable.com%2Farticle%2Fstuff-your-e-reader-day&session_uuid=3b2e1518-8764-4f0e-9916-58af3f7ed2fc&view_instance_uuid=4f1b7506-4c4b-41b0-b72e-65f417f7a716 "(opens in a new window)") subscribers can borrow at the same time.
## The best Stuff Your Kindle Day deal
Credit: Amazon
\$109.99 at Amazon
### Why we like it
These [popular e-readers](https://mashable.com/roundup/best-e-readers) let you take your entire library on the go. With weeks of battery life and an anti-glare display, you can read anywhere and anytime with the [Kindle](https://mashable.com/review/amazon-kindle-2022-release). Plus, you can get three months of Kindle Unlimited for free with your purchase for a limited time.

Global Shopping Editor
Joseph Green is the Global Shopping Editor for Mashable. He covers VPNs, headphones, fitness gear, dating sites, streaming, and shopping events like Black Friday and Prime Day.
Joseph is also Executive Editor of Mashable's sister site, AskMen.

The federal government summoned financial leaders to an emergency meeting over Claude Mythos last week.

R.E.M. voice: Is this the end of the digital world as we know it? Credit: Jonathan Raa/NurPhoto via Getty Images
Anthropic put the entire tech world on notice last week with an unprecedented announcement: it made an AI model so advanced that it was too dangerous to release to the public. Anthropic said the new frontier language model, [Claude Mythos Preview](https://mashable.com/article/antropic-pulls-mythos-ai-security-flaws), would "reshape cybersecurity."
Anthropic also announced the [formation of Project Glasswing](https://red.anthropic.com/2026/mythos-preview/ "(opens in a new window)"), an invite-only group of organizations — including some of Anthropic's biggest competitors — to test Claude Mythos Preview and secure their infrastructure.
Anthropic said that [Claude Mythos Preview](https://anthropic.com/glasswing "(opens in a new window)") "found thousands of high-severity vulnerabilities, including some in *every major operating system and web browser*." (Emphasis in original.) The company said Project Glasswing was necessary "to help secure the world’s most critical software."
By Friday, [CNBC reported](https://www.cnbc.com/2026/04/10/powell-bessent-us-bank-ceos-anthropic-mythos-ai-cyber.html "(opens in a new window)") that Federal Reserve Chairman Jerome Powell and Treasury Secretary Scott Bessent had summoned the high priests of finance (aka banking CEOs) for an emergency meeting about the new model. [*New York Times*](https://www.nytimes.com/2026/04/07/opinion/anthropic-ai-claude-mythos.html "(opens in a new window)") writer Thomas Friedman fretted over a "terrifying" future in which any teenager armed with Claude could hack the local power grid.
The reaction to Claude Mythos Preview quickly split along predictable lines. AI boosters hailed the new model as proof that artificial general intelligence (AGI) was nigh, praising Anthropic for rolling it out so responsibly.
Critics and AI skeptics called Project Glasswing a big publicity stunt.
So, which is it?
To find out, Mashable has been reviewing Anthropic's claims and talking to AI and cybersecurity experts.
### What is Claude Mythos Preview?
Claude Mythos is a new large-language model that Anthropic says performs significantly better than Claude Opus 4.6 — widely considered one of the [best AI models in the world](https://arena.ai/leaderboard/text "(opens in a new window)") — especially in cybersecurity.
"In our testing, Claude Mythos Preview demonstrated a striking leap in cyber capabilities relative to prior models, including the ability to autonomously discover and exploit zero-day vulnerabilities in major operating systems and web browsers," reads the [Claude Mythos system card](https://www-cdn.anthropic.com/08ab9158070959f88f296514c21b7facce6f52bc.pdf "(opens in a new window)").
### Is Claude Mythos a sign of AGI?
Artificial general intelligence refers to superintelligent AI that can perform better than humans across a wide range of tasks. It's not an exaggeration to say that our entire economy has been organized around [the quest for AGI](https://www.wsj.com/tech/ai/the-spiraling-cost-of-making-ai-0679bcea "(opens in a new window)"), as Anthropic, Google, Meta, xAI, and OpenAI pour hundreds of billions of dollars into a new arms race.
If Claude Mythos is as capable as Anthropic says, would it be an example of AGI? The model card addresses this question, and Anthropic does seem to think it's close to AGI.
"Any major platform rollout in this era is going to look different to different audiences depending on their fluency and their fear tolerance. What I care about is whether the intent is real, and the evidence I've seen from Anthropic suggests it mostly is."
In a section about Claude Mythos safety risks, Antropic writes: "Current risks remain low. But we see warning signs that keeping them low could be a major challenge if capabilities continue advancing rapidly (e.g., to the point of strongly superhuman AI systems)." Of course, Anthropic has a strong financial incentive to promote this belief.

This chart shows how Mythos compares to previous Anthropic models on the Epoch Capabilities Index (ECI), which combines multiple benchmark scores into one. Credit: Anthropic
Ultimately, the model card for Claude Mythos is more conservative than the reaction online would suggest.
For example, while the Claude Mythos model card *does* show that this model performs above the trend line for previous Anthropic models, Anthropic says it does *not* show evidence of self-improvement or recursive growth. ("Importantly, though we’re observing a slope change with Claude Mythos Preview, we do not know if this trend will continue with future models...The gains we can identify are confidently attributable to human research, not AI assistance.")
### Reasons to think Project Glasswing is a publicity stunt
Don't make me tap my sign: "\[When\] an AI salesman tells you that AI is an unstoppable world-changing technology on the order of the agricultural revolution...you should take this prediction for what it is: a sales pitch."
I wrote those words of caution in [response to an essay by Anthropic CEO Dario Amodei](https://mashable.com/article/opinion-anthropic-ceo-dario-amodei-essay-warning-artificial-intelligence), which warned about the potentially cataclysmic dangers of AI. Anthropic also has a history of issuing dire warnings about its AI models.
You may remember the story of the Anthropic model that tried to "blackmail" a company CEO to prevent it from being turned off. In reality, [Anthropic designed a test environment](https://www.niemanlab.org/2025/05/anthropics-new-ai-model-didnt-just-blackmail-researchers-in-tests-it-tried-to-leak-information-to-news-outlets/ "(opens in a new window)") where blackmail was a potential outcome. This may be more akin to digital entrapment than genuine model misbehavior.
So, is Claude Mythos the latest example of [the industry's Chicken Little problem](https://mashable.com/article/viral-something-big-is-coming-essay-artificial-intelligence-warning)?
On X, AI safety engineer [Heidy Khlaaf](https://www.heidyk.com/ "(opens in a new window)") listed a number of open questions that cast doubt on Anthropic's claims.
> [This Tweet is currently unavailable. It might be loading or has been removed.](https://twitter.com/HeidyKhlaaf/status/2041591737563394442 "(Opens in a new tab) (opens in a new window)")
Anthropic said the Claude Mythos preview found thousands of zero-day vulnerabilities. But Khlaaf says Anthropic left out key facts needed to assess this claim — the rate of false positives, how Claude Mythos compares to existing cybersecurity tools, and exactly how much manual human review was required.
"Releasing a marketing post with purposely vague language that clearly obscures evidence needed to substantiate Anthropic's claims brings into question if they are trying to garner further investment," Khlaaf told Mashable. "It also serves their 'safety first' image as they're able to frame the lack of public release, even a limited one for independent evaluation, as a public service when it simply obscures even experts' abilities to validate their claims."
We reached out to Anthropic repeatedly about these concerns, but the company did not respond. We will update this article if they do. In the Claude Mythos system card, Anthropic wrote that more data will be released in the coming weeks as the bugs Mythos found are patched and fixed.
[Gary Marcus](https://garymarcus.substack.com/ "(opens in a new window)"), an AI expert, scientist, author, and noted critic of the LLM hype machine, initially told Mashable that it was too soon to know whether Claude Mythos represented a new type of threat.
But Marcus has grown more skeptical since we spoke to him, and he recently [wrote on X](https://x.com/GaryMarcus/status/2043754005718020552 "(opens in a new window)") that Mythos was "nowhere near as scary" as it first seemed. "Folks, you can relax. Mythos is not some off-trend exponential gain," he [wrote](https://x.com/GaryMarcus/status/2042237250889760907 "(opens in a new window)").
> [This Tweet is currently unavailable. It might be loading or has been removed.](https://twitter.com/GaryMarcus/status/2042430900789788682 "(Opens in a new tab) (opens in a new window)")
Cybersecurity experts told Mashable it's also very unlikely Claude Mythos could be used to "turn off the lights" or bring down critical infrastructure.
"Claims about catastrophic uses of Mythos also significantly misunderstand threat models, cybersecurity risks, and the ability to propagate said risks in a way that could actually lead to safety-critical incidents," Khlaaf told us. "It's not as simple as asking a model 'hack this system,' with Anthropic's own [technical blog post](https://red.anthropic.com/2026/mythos-preview/ "(opens in a new window)") demonstrating a requisite of expertise that Anthropic downplays in their marketing posts."
Other experts expressed skepticism, while also acknowledging that Mythos does represent a genuine risk, which Marcus has also said.
"You could argue it didn’t need a public announcement," said [Div Garg](https://www.linkedin.com/in/div99 "(opens in a new window)"), a Stanford AI researcher and founder of [AGI, Inc.](https://www.theagi.company/ "(opens in a new window)") "However, ultimately, the decision to limit access to only those who develop and maintain critical software is precisely what you want a business to do in such a scenario…It’s easy to criticize the limited access, but worse outcomes would arise if they released it unchecked."
Tal Kollender, Founder and CEO of cybersecurity firm [Remedio](https://remedio.io/ "(opens in a new window)"), told Mashable that tools like Claude Mythos are dangerous because they can automate exploit discovery.
"It's brilliant corporate theater," Kolender said. "Labeling a model 'too dangerous to release to the public' is certainly a marketing flex because it immediately creates mystique and signals immense power to investors. But beneath the PR stunt, there is a very real, very mundane truth...The cybersecurity industry doesn't actually have a 'finding' problem. We are already drowning in tools that detect vulnerabilities. What Mythos does is automate that discovery process at an unprecedented scale."
**TL;DR:** A week after revealing Claude Mythos Preview, some of Anthropic's biggest claims about the model look a lot sketchier, experts say. However, they also acknowledge that Claude Mythos poses a real risk.
Still, there are plenty of very valid reasons to be nervous about the new frontier model.
## Reasons to think Claude Mythos Preview *is* a genuine threat to global cybersecurity
In the [*New York Times*](https://www.nytimes.com/2026/04/07/opinion/anthropic-ai-claude-mythos.html "(opens in a new window)"), author Thomas Friedman conjures a scenario straight out of *War Games*, where a teenager hacks the local power grid after school.
That scenario seems even more far-fetched a week later. But here's a much more likely scenario: A sophisticated group of hackers uses a tool like Claude Mythos to find zero-day vulnerabilities in our digital infrastructure, launching attacks faster than organizations can respond.
And that scenario should worry you.
If Claude Mythos isn't the tool that can do it, most experts agree such a tool isn't far off.
And some of the world's leading cybersecurity experts certainly seem worried.
"I've found more bugs in the last couple of weeks \[with Claude Mythos\] than in the rest of my entire life combined," said Nicholas Carlini, a research scientist affiliated with Anthropic and Google DeepMind, in a video on the [Project Glasswing website](https://www.anthropic.com/glasswing "(opens in a new window)").
"On Linux, we found a number of vulnerabilities where, as a user with no permissions, I can elevate myself to the administrator by just running some binary on my machine," Carlini said.
This week, the [AI Security Institute](https://www.aisi.gov.uk/blog/our-evaluation-of-claude-mythos-previews-cyber-capabilities "(opens in a new window)") published its findings on Claude Mythos's capabilities, and it provides some independent verification that it does represent a genuine leap forward.

The AISI is research organization within the UK government's science and technology department. Credit: AISI
Claude Mythos passed AISI cybersecurity tests that no other model had ever completed, scoring higher than any other frontier model on virtually every test.
"Our testing shows that Mythos Preview can exploit systems with weak security posture, and it is likely that more models with these capabilities will be developed," AISI concluded.
> [This Tweet is currently unavailable. It might be loading or has been removed.](https://twitter.com/AISecurityInst/status/2043683577594794183 "(Opens in a new tab) (opens in a new window)")
AISI also identified some limitations with Claude Mythos, which would impair its effectiveness in real-world scenarios.
So, was Anthropic’s rollout of Mythos responsible AI stewardship or self-serving marketing? Experts I talked to said these options aren’t mutually exclusive.
"I'd say it's both, and that's not a criticism," said [Howie Xu](https://www.gendigital.com/us/en/leadership/ "(opens in a new window)"), Gen's Chief AI & Innovation Officer. "Any major platform rollout in this era is going to look different to different audiences depending on their fluency and their fear tolerance. What I care about is whether the intent is real, and the evidence I've seen from Anthropic suggests it mostly is."
As is often the case with fear-inducing AI headlines, the reality turned out to be more complicated.
"Personally, I don't go to bed worrying about a kid with Mythos hacking the power grid, but that doesn't mean the concern is fictional," said Xu. "We're at an inflection point where the creative and collaborative upside of these tools is massive, and the security infrastructure hasn't caught up. That gap is exactly what keeps me busy. Even a fractional probability of a serious incident is too much, which is why building a trust and security layer into the agentic era is my extreme focus."
Finally, as Anthropic stresses in the Claude Mythos model card, tools like this will likely benefit cybersecurity defenders more than hackers in the long-term. And in the short-term, a more cautious approach — like the approach being modeled with Project Glasswing — may be warranted.
**TL;DR:** Claude Mythos has formidable cybersecurity coding abilities, and it does represent a genuine threat. However, if hackers have access to AI tools like Claude Mythos, so will the organizations defending against such attacks.
***UPDATE: Apr. 14, 2026, 9:40 p.m. EDT** This article has been updated with additional information about some of the cited experts.*

Tech Editor
Timothy Beck Werth is the Tech Editor at Mashable, where he leads coverage and assignments for the Tech and Shopping verticals. Tim has over 15 years of experience as a journalist and editor, and he has particular experience covering and testing consumer technology, smart home gadgets, and men’s grooming and style products. Previously, he was the Managing Editor and then Site Director of SPY.com, a men's product review and lifestyle website. As a writer for GQ, he covered everything from bull-riding competitions to the best Legos for adults, and he’s also contributed to publications such as The Daily Beast, Gear Patrol, and The Awl.
Tim studied print journalism at the University of Southern California. He currently splits his time between Brooklyn, NY and Charleston, SC. He's currently working on his second novel, a science-fiction book.
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