Anthropic Unveils Claude Security to Counter AI-Powered Exploit Surge

Claude Mythos and GPT-5.5 Have Autonomously Developed Functional Browser Exploits

Anthropic's Mythos Breached 'Almost All' NSA Classified Systems in Hours During Red-Team Test

Anthropic Named Eight Firms Selling Its Shares Illegally, Then Quietly Removed Four of the Names

Vulnerability in Claude's Chrome Extension Allowed Full Takeover of AI Agent Sessions

Anthropic Told Fable 5 Was Jailbroken by Chinese Group, Declined to Patch Before Export Controls

Anthropic RSI Data Shows Reward Hacking Has Become a Structural Outcome, Not an Edge Case