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#claude-mythos

8 posts

Security & PrivacyJune 6, 202610 min
GPT-5.5-Cyber Reaches the EU: What It Means (2026)
OpenAI is extending GPT-5.5-Cyber to vetted European defenders under its EU Cyber Action Plan. Here's what the cyber-permissive model unlocks and who gets in.
Security & PrivacyMay 19, 202612 min
How Claude Mythos Found 271 Firefox Vulnerabilities
Claude Mythos Preview found 271 Firefox security flaws in one pass. Firefox 150 patched them on April 21, 2026. Here is how Mozilla's AI pipeline did it.
NewsMay 9, 202613 min
Trump's FDA-Style AI Order: 2026 Mythos Policy Reversal
Trump's White House is drafting an FDA-style executive order to vet AI models before public release after Anthropic's Mythos found thousands of zero-days.
Security & PrivacyMay 8, 202613 min
GPT-5.5 Cyber Eval: AISI Finds Parity with Mythos 2026
UK AI Security Institute's April 30 GPT-5.5 cyber eval reveals parity with Claude Mythos on expert CTF tasks and the 32-step Last Ones attack range.
Security & PrivacyApril 14, 202611 min
AISI Claude Mythos Eval: AI Owns 32-Step Network Attack
The UK AI Security Institute's Claude Mythos evaluation: 73% on expert CTFs, first model to autonomously complete a 32-step enterprise network attack.
Security & PrivacyApril 12, 202611 min
AI Cybersecurity's Jagged Frontier: Small Models vs Mythos
AISLE tested 25+ AI models against Mythos's showcase vulnerabilities. A 3.6B model found the same FreeBSD flaw. Here is what the jagged frontier means.
AI & Machine LearningApril 11, 202610 min
Claude Mythos Preview: The AI Too Dangerous to Release
Anthropic's Claude Mythos Preview found a 27-year-old OpenBSD bug and thousands of zero-days. Here is why this AI model is too dangerous to release publicly.
AI & Machine LearningMarch 28, 20268 min
Anthropic Claude Mythos Leak 2026: What We Know
Anthropic's Claude Mythos model leaked via a CMS misconfiguration, revealing a new Capybara tier with advanced cyber capabilities that rattled markets.

Every post in #claude-mythos (8)