Anthropic blocks attempts to use its AI models for cyberattacks, bioweapons research stuff.co.nzDetecting and countering misuse of AI: September 2026 AnthropicAnthropic Says It Blocked Possible Efforts to Build Biological Weapons The New York TimesAnthropic discloses 4th AI hacking incident as researcher quits over safety Al JazeeraAn alignment assessment of recent cybersecurity incidents Anthropic