Mythos autonomously exploited vulnerabilities that survived 27 years of human review. Security teams need a new detection playbook

A 27-year-old bug sat inside OpenBSD’s TCP stack while auditors reviewed the code, fuzzers ran against it, and the operating system earned its reputation as one of the most security-hardened platfor [...]

Anthropic says its most powerful AI cyber model is too dangerous to release publicly — so it built Project Glasswing

Anthropic on Tuesday announced Project Glasswing, a sweeping cybersecurity initiative that pairs an unreleased frontier AI model — Claude Mythos Preview — with a coalition of twelve major technolo [...]

Mozilla says it patched 271 Firefox vulnerabilities thanks to Anthropic's Claude Mythos

Anthropic's buzzy announcement about using AI to improve cybersecurity earlier this month was met with plenty of skepticism. However, Mozilla shared some details that support use of the company&# [...]

Mozilla patched 271 Firefox bugs found by Anthropic’s Mythos, and says the zero-day era has an expiration date

Summary: Mozilla released Firefox 150 with fixes for 271 security vulnerabilities identified by Anthropic’s Claude Mythos Preview, an unreleased frontier AI model distributed under the restricted Pr [...]

Anthropic is investigating 'unauthorized access' of its Mythos cybersecurity tool

Anthropic is investigating potential "unauthorized access" to its Claude Mythos model that has been touted for its ability to find cybersecurity flaws, the company told Bloomberg. A group ga [...]

Anthropic just launched Claude Design, an AI tool that turns prompts into prototypes and challenges Figma

Anthropic today launched Claude Design, a new product from its Anthropic Labs division that allows users to create polished visual work — designs, interactive prototypes, slide decks, one-pagers, an [...]

Mozilla is shutting down its read-it-later app Pocket

Pocket, Mozilla's service for saving articles to read later, is shutting down on July 8, 2025. Mozilla says it's phasing out Pocket and Fakespot, its browser extension for vetting product re [...]

Anthropic's Claude Code Security is available now after finding 500+ vulnerabilities: how security leaders should respond

Anthropic pointed its most advanced AI model, Claude Opus 4.6, at production open-source codebases and found a plethora of security holes: more than 500 high-severity vulnerabilities that had survived [...]

Anthropic and OpenAI just exposed SAST's structural blind spot with free tools

OpenAI launched Codex Security on March 6, entering the application security market that Anthropic had disrupted 14 days earlier with Claude Code Security. Both scanners use LLM reasoning instead of p [...]