I've been brewing on this topic since Mythos preview was announced. As Mythos got finally released, then banned, then released again under U.S. government control, it was time to finally flesh it out and use it as a way to exit the lurker-zone on HN !
The CCC talk in December showed me how good llms are at ctf.<p>Ctf fundamentaly have to change.<p>It also showed how critical it is to use llms now.<p>A lot has changed in just 12 month tbh.<p>If you still don't invest time and money into adding llms to your security you didn't hear the bang.
Ha yeah I totally agree, that's actually one of the future posts I have in draft : the other downfall of GenAI in cyber. You can't outsource learning, and a lot of learning opportunities in the Cybersecurity industry are getting totally ruined by llms (ctf, low hanging fruit bug bounties, foss software getting burnout by AI slop and closing the gate to potential newbie willing to get involved, etc.)
The fear porn around this all has been horrible. I work in Cybersecurity and Mythos is all the vendors will talk about because they want to sell something. It started the day of the announcement which is what told me it was all BS. They had no information about it yet would happily tell me about all their solutions for it.<p>Anyone in my profession worth a damn will tell you the vast majority of security issues are related to bad configurations and bad practices + accidents and bad luck. Vulnerable software is a problem but basic defense in depth will either mitigate or drastically reduce attack surface. Mythos does nothing to change that.<p>The technical debt at companies is the largest security threat. That, and layer 8 which is the people factor. The amount of silliness I've seen from people and companies as a whole is truly hard to verbalize. I've seen banks that gave every employee from the janitor up to the CEO domain admin access due to a crappy application that was written in 2004 that they never updated. I've seen a fortune 250 company write its own internal routing protocol that was basically clear text traffic that dated back to the 1990's and was never retired because, why not. I've seen contractors infect entire fab's in the chip industry because they plugged an infected USB stick into a 30 year old tool that hadn't seen an update in over 20. Then when the fab came back up, they did it again the next day.<p>Ultimately, Mythos is just another tool in the toolbox. It's great to find new vulns but it is incredibly short sighted to think it will move the needle in any meaningful way in the security industry.
Mythos actually does change that calculus. Going forward, with access to a mythos caliber llm actors are not tied to bad configs or lazy admins for access. I get that the bs is real. But it's important for you to not rest on your laurels having recognizing that salesmen sell. You actually have to pay attention to and understand the new developments your field. It's sad that the marketing department odd doing a better job than you in that manner
We already are using software that is ancient, with many vulnerabilities that are already in the public, we already use insecure software more than we care to admit, if Mythos is gonna help with that, it's gonna make finding (not discovering) these vulnerabilities easier because it already has the knowledge, but the enough intellect to come up with new ones.
Same applies for other LLMs
Does depth matter when you can automate attacks with intelligent agents?
All of this, but you forgot that ai opens up new vectors.<p>AI itself is a security risk: <a href="https://www.404media.co/hackers-simply-asked-meta-ai-to-give-them-access-to-high-profile-instagram-accounts-it-worked/" rel="nofollow">https://www.404media.co/hackers-simply-asked-meta-ai-to-give...</a><p>I keep seeing screen shots of random AI chat bots who have been prompt injected to write code. That car dealership is now paying for the tokens for some script kiddie to pump out python.
Forget whether it is Mythos or GPT 5.6, or any other specific model. SOTA models have tool likely have the knowledge and capability to create zero days from nearly every discovered and many undiscovered vulnerabilities. In the wrong hands can deploy and generate malware and submarine code that would go undetected behind secured systems. Add in the ability to clone voices, create mass social engineering campaigns.<p>Yet "Just another tool in the toolbox." I mean, that's not wrong!
The genie is out of the bottle, folks. You can find some pretty good vulnerabilities even with models like Deepseek V4 Flash.
This is a great read! I never realized the scale of the effort to find that BSD vulnerability- helps put things in perspective
So funny both this and <a href="https://news.ycombinator.com/item?id=48698617">https://news.ycombinator.com/item?id=48698617</a> are on the front page at the same time.
But what if Opus 7.1 is real smart - as what Mythos was promised to be?<p>Or an Opus 9.0<p>Will Cybersecurity ever start to be an issue?
it all looks suspicious:<p><pre><code> - June 1st 2026: Anthropic files S-1 paperwork with SEC to get ready for IPO
- June 2nd 2026: Anthropic annouces expanding "Project Glasswing" to let people use their new model to enhance security of existing systems
- June 9th 2026: Anthropic releases Mythos model
- June 12th 2026: Model gets export regulations placed on it by US Gov
- June 26th 2026: US gov announces they will let some companies use new model
- August 2026: Anthropic goes IPO
</code></pre>
The timing of all of this just seems to be a play to pump the stock. The reality is that in six months GLM-5.3 will be released open source with comparable functionality to their Mythos model. They are trying to cash in before that happens.<p>I would not be surprised if the US government, the people pulling the strings who actually put the export announcements onto Anthropic, actually have purchased stock in the company to artificially pump up the stock, I would bet money on it.
Nah I spoke to a security researcher who still has access to Mythos. He says it is significantly better than their earlier models for security research. Based on my one-day use of Fable that was also a noticeable step up for coding.<p>There's absolutely no way Anthropic engineered this to bump their IPO price. That's lunatic conspiracy theory territory.<p>> I would not be surprised if the US government, the people pulling the strings who actually put the export announcements onto Anthropic, actually have purchased stock in the company to artificially pump up the stock, I would bet money on it.<p>The same US government that labelled Anthropic as a supply chain risk? This is the most ridiculous idea I've heard all week.
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The actual story here: The Trump administration is going to choose which organizations get access to which AI models when.<p>This will establish an asymmetry where the chosen organizations get to secure their stuff and break other people’s systems with each new model release.<p>If you believe the “good guys” will be the ones given asymmetric offensive access, then you’re either severely misinformed or support things like ethnic cleansing (which these models are already being used for).<p>Mythos’ slightly higher performance is a nothing burger. It is not even the current top model. According to anthropic, gpt 5.5 is!<p>Personally, I’m switching to open weight models asap, and probably will start sending money to Chinese vendors since they have values more compatible with western democracy.
I tend to agree but open weight model seem to still be lagging behind in terms of capacity, even the recent ones like GLM 5.2. If anything I hope the sudden, unpredictable changes of policy will make EU companies think twice before putting all their eggs in the same AI vendors's basket, all US based. Vendors coming back on their retention policies like they did with Fable 5 or plainly cutting the service without notice should be a gigantic red flag about your business continuity.<p>It's maddening how the corporate world can get shy of using any of those Chinese models, just because they are Chinese. This kind of FUD makes little sense when the inference is done in-house or by an EU/US cloud provider.
Companies have never secured their stuff and it's not because they didn't have access to Mythos. No one cares and breaches don't cost them money or customers. If I sound cynical it's because I am.<p>There's no functional difference between<p>"Hey npm says this is vulnerable, we need to fix it!" /
"Nah, later."<p>and<p>"Hey Mythos says this is vulnerable, we need to fix it!" /
"Nah, later."
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