{"version":1,"type":"story","url":"https://digestai.news/story/chainguard-launches-harness-to-find-and-fix-vulnerabilities-using-anth","json":"https://digestai.news/story/chainguard-launches-harness-to-find-and-fix-vulnerabilities-using-anth.json","markdown":"https://digestai.news/story/chainguard-launches-harness-to-find-and-fix-vulnerabilities-using-anth.md","slug":"chainguard-launches-harness-to-find-and-fix-vulnerabilities-using-anth","headline":"Chainguard launches Harness to find and fix vulnerabilities using Anthropic’s Claude Mythos 5.1","summary":"Chainguard introduced **Harness**, a cybersecurity tool that scans live applications for exploitable vulnerabilities using **Anthropic’s Claude Mythos 5.1** model. The tool runs code in an isolated microVM, identifies real-world flaws, and provides ready-to-merge fixes—without requiring organizations to own their own frontier AI models.\n\nHarness targets a gap in traditional vulnerability scanners, which often flag false positives or miss runtime flaws. Chainguard claims the tool has uncovered serious vulnerabilities in code previously deemed secure, including critical infrastructure software. It is now available via the **Claude Marketplace**, allowing customers to purchase it directly from Anthropic. The company positions Harness as a way for security teams to act on proven findings without wasting time on unverified alerts.","keyPoints":["Chainguard Harness uses Anthropic’s Claude Mythos 5.1 to scan live applications for exploitable vulnerabilities in isolated microVMs","Provides reproducible fixes for both open-source and first-party code, reducing false positives from traditional scanners","Available via the Claude Marketplace, priced as part of Anthropic’s AI spend consolidation for customers"],"whyItMatters":"Harness bridges the gap between AI-powered vulnerability detection and actionable fixes, helping organizations secure their code without needing direct access to frontier AI models. This could reduce security backlogs and incident risks for teams lacking in-house AI resources.","category":{"slug":"enterprise","name":"Enterprise & Industry","url":"https://digestai.news/category/enterprise"},"entities":{"companies":["Chainguard","Anthropic"],"models":["Claude Mythos 5.1"],"people":["Dan Lorenc"]},"firstPublishedAt":"2026-10-13T22:00:00Z","updatedAt":"2026-10-14T05:29:10Z","sourceCount":2,"hasPrimarySource":false,"sources":[{"outlet":"finance.yahoo.com","title":"Introducing Chainguard Harness: Proven Vulnerabilities and Ready-to-Merge Fixes From Frontier AI, No Model Access Required","url":"https://finance.yahoo.com/technology/ai/articles/introducing-chainguard-harness-proven-vulnerabilities-050000238.html","publishedAt":"2026-10-13T22:00:00Z","type":"press","primary":false,"lead":true},{"outlet":"Unite.AI","title":"Chainguard Introduces Harness for Frontier-AI Vulnerability Hunting","url":"https://unite.ai/chainguard-introduces-harness-for-frontier-ai-vulnerability-hunting","publishedAt":"2026-10-14T05:29:10Z","type":"press","primary":false,"lead":false}],"sourceNotes":null,"discussions":[],"thread":{"title":"Chainguard Secures AI Coding Agents","url":"https://digestai.news/thread/chainguard-launches-workspaces-checks-to-secure-ai-coding-agents","storyCount":2},"cite":{"text":"Digest AI, \"Chainguard launches Harness to find and fix vulnerabilities using Anthropic’s Claude Mythos 5.1\", 13 October 2026, https://digestai.news/story/chainguard-launches-harness-to-find-and-fix-vulnerabilities-using-anth","publisher":"Digest AI","title":"Chainguard launches Harness to find and fix vulnerabilities using Anthropic’s Claude Mythos 5.1","datePublished":"2026-10-13T22:00:00Z","url":"https://digestai.news/story/chainguard-launches-harness-to-find-and-fix-vulnerabilities-using-anth"},"generatedBy":"Written by Digest AI's editorial model from the linked sources; the sources are the record.","license":"Headlines, digests and key points are written by Digest AI and may be quoted with a link to the story page. Linked articles belong to their publishers. Terms: https://digestai.news/terms#reuse"}