{"data":{"id":"6fdcb28d-b790-4403-8c1e-118c5f53d6e4","title":"How Anthropic’s Mythos has rewritten Firefox’s approach to cybersecurity","summary":"Anthropic's Mythos model, an advanced AI system for finding bugs, has dramatically improved Firefox's ability to discover software vulnerabilities (flaws in code that attackers can exploit), unearthing thousands of high-severity bugs including some hidden for over a decade. Unlike older AI bug-finding tools that produced many false positives (incorrect alerts), Mythos uses agentic systems (AI that can assess and filter its own work) to deliver higher-quality results, leading Firefox to ship 423 bug fixes in April 2026 compared to 31 a year earlier. However, Mozilla's engineers still manually write and review patches rather than deploying AI-generated code directly, as they have not found the fix-writing process automatable.","solution":"N/A -- no mitigation discussed in source.","labels":["security","research"],"sourceUrl":"https://techcrunch.com/2026/05/07/how-anthropics-mythos-has-rewritten-firefoxs-approach-to-cybersecurity/","publishedAt":"2026-05-07T16:05:48.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":null,"severity":"info","attackType":[],"issueType":"news","affectedPackages":null,"affectedVendors":["Anthropic"],"affectedVendorsRaw":["Anthropic","Mythos","Mozilla Firefox"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"patchAvailable":null,"disclosureDate":"2026-05-07T16:05:48.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"advanced","impactType":["integrity"],"aiComponentTargeted":"model","llmSpecific":false,"classifierConfidence":0.85,"researchCategory":null,"atlasIds":null}}