X @BSCN

MOZILLA TIGHTENS FIREFOX WITH CLAUDE MYTHOS PREVIEW@mozilla disclosed Thursday that it used Anthropic's unreleased Claude Mythos Preview to find 271 latent security bugs in @firefox, including vulnerabilities that had gone undetected for 15 and 20 years.The volume tells the story. Mozilla shipped about 25 security fixes per month throughout 2025. In April 2026 alone, it shipped 423.Mozilla built its own agentic harness on top of existing fuzzing infrastructure. The harness creates and runs reproducible test ...