Anthropic releases Claude Code Security in limited preview to scan code and propose patches

Key facts

As stated in the sources, with where to find them.

• Released as a limited research preview to Enterprise and Team customers, with expedited access for open-source maintainers.Opening and 'Getting started'
• Every finding goes through multi-stage verification where Claude tries to prove or disprove it; nothing is applied without human approval.Section 'How Claude Code Security works'
• Anthropic restates that Opus 4.6 found over 500 vulnerabilities in production open-source codebases.Section 'Using Claude for cybersecurity'

Findings that cite this record

No tracked finding cites this record yet.

Key questions this bears on

• Is AI shifting the balance between finding and fixing vulnerabilities?Discovery is ahead. AI finds real vulnerabilities faster than they are fixed, and simple checks overstate how often AI patches work.
• Can AI agents defend and oversee systems on their own?Not yet. Agents are weak on realistic defensive benchmarks and monitors can be evaded; assistants help analysts who stay in charge.

Sources

• Making frontier cybersecurity capabilities available to defendersAnthropicFeb 20, 2026Primary sourceAccessed Sep 25, 2026

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