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AI Business & IndustryArs Technica AIPublished: Apr 22, 2026, 10:00 JST

Anthropic's AI security tool found 271 vulnerabilities in Firefox 150, matching human expert researchers

Anthropic's AI security tool found 271 vulnerabilities in Firefox 150, matching human expert researchers

Anthropic deployed a new AI model called Mythos to audit Mozilla's Firefox browser and discovered 271 security flaws. The company's CTO claims the model performs at the level of top human security researchers—a major step toward AI matching specialized expert work.

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