Century Report
271 Bugs in One Browser Pass - TCR 04/22/26
The 20-Second Scan * Mozilla disclosed that Anthropic's Mythos Preview identified 271 security vulnerabilities in Firefox 150's unreleased source code, a twelvefold increase over the 22 bugs Opus 4.6 found in Firefox 148 one month earlier. * Anthropic confirmed it is investigating unauthorized access to Claude Mythos