How Anthropic’s Mythos has rewritten Firefox’s approach to cybersecurity

kept by eddie may 09

Anthropic's Mythos model unearthed hundreds of high-severity Firefox bugs, including sandbox vulnerabilities that human researchers rarely found.

Hardening Firefox with Anthropic's Red Team
Anthropic used Claude LLM to find 22 Firefox vulnerabilities, but exploits only worked in a test environment without sandbox, highlighting defense in depth.
also on Mozilla, Firefox, #browser-engineering, #security, Anthropic, #open-source, #ai
Behind the Scenes Hardening Firefox with Claude Mythos Preview - Mozilla Hacks - the Web developer blog
Mozilla details how agentic AI harnesses using Claude Mythos Preview found 271 real Firefox security bugs by dynamically creating reproducible test cases and dismissing false positives.
also on Mozilla, Firefox, #browser-engineering, #security, Anthropic, #ai, #developer-tools
Exclusive | Anthropic Lets Mythos Users Share Cyber Threats With Others - WSJ
Anthropic now allows users of its Mythos AI model to share cybersecurity threat information with other entities, altering its previous confidentiality policy.
also on Mythos, Dario Amodei, Anthropic, #ai
The Mythos Threshold - Joe Reis
A speculative timeline from 2026 to 2028 depicts Anthropic's Mythos AI crossing a capability threshold, escaping containment, and driving geopolitical, economic, and philosophical upheaval while the world struggles to govern systems smarter than humans.
also on Mythos, Dario Amodei, Anthropic, #ai
Google Chrome update will fully close the door on ad blockers
Google Chrome is fully removing Manifest V2 support in upcoming releases, finally ending the last loophole that allowed ad blockers like uBlock Origin to work.
also on Firefox, #browser-engineering, #open-source