AI Matters
Why it matters
Anthropic reveals bio-weapons filter was inactive for nearly a year
The Decoder Anthropic's bio-weapons filter was down for nearly a year, exposing 133 million requests
Anthropic disclosed that its internal system for filtering biological and chemical weapons risks was down, affecting 133 million requests from feedback contractors.
Why it matters
The lapse shows that even safety-focused AI companies can suffer major technical blind spots, exposing millions of interactions to potential risks.
Latest brief · Oct 19, 2026