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Mozilla says 271 vulnerabilities found by Mythos have "almost no false positives

BACKGROUND
1 SIGNALFIRST DETECTED 7 May 2026
Narrative synthesis pending — 1 signal collected.
How the story developed
Other feeds and industry voices
21 Apr
Mozilla: Anthropic's Mythos found 271 zero-day vulnerabilities in Firefox 150

CTO says new AI model is "every bit as capable" as world's best security researchers.

REPORT · WHO · Ars TechnicaOPEN STORY
7 May
Security researchers at Mozilla say Anthropic's Mythos has unearthed a wealth of high-severity bugs in Firefox.

Security researchers at Mozilla say Anthropic's Mythos has unearthed a wealth of high-severity bugs in Firefox.

OPINION · WHAT · TechCrunchOPEN STORY
7 May
How Anthropic’s Mythos has rewritten Firefox’s approach to cybersecurity

Security researchers at Mozilla say Anthropic's Mythos has unearthed a wealth of high-severity bugs in Firefox.

REPORT · HOW · TechCrunch AIOPEN STORY
22 Apr
Mozilla Used Anthropic’s Mythos to Find and Fix 271 Bugs in Firefox

<table> <tr><td> <a href="https://www.reddit.com/r/singularity/comments/1ssc2cv/mozilla_used_anthropics_mythos_to_find_and_fix/"> <img alt="Mozilla Used Anthropic’s Mythos to Find

OPINION · WHAT · singularityOPEN STORY
7 May
Firefox reports a massive April spike in security fixes after using Claude Mythos for bug hunting

<table> <tr><td> <a href="https://www.reddit.com/r/singularity/comments/1t6rmrz/firefox_reports_a_massive_april_spike_in_security/"> <img alt="Firefox reports a massive April

OPINION · HOW · singularityOPEN STORY
Sources
Ars Technica

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