Rubrik Unveils Code Guardian with Claude Mythos 5 to Red-Team Code and Detect Vulnerability Chains

Rubrik Deploys Frontier AI for Defensive Code Security

Rubrik (NYSE: RBRK) announced Rubrik Code Guardian, an AI-powered code security testing service that harnesses Anthropic Claude Mythos 5 to red-team enterprise code and prioritize cyber risks1

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. The service operates on air-gapped copies of code repositories, testing for multi-step vulnerability chains that could be exploited by attackers. "Rubrik is one of the partners we are working with to put Claude Mythos 5's cyber capabilities in defenders' hands, so they can find and validate attack paths before attackers do," said Michael Moore, Cybersecurity lead at Anthropic1

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. The service addresses a critical challenge: as frontier AI advances, malicious actors can discover, chain, and exploit vulnerabilities at machine speed, creating an urgent need for defenders to move just as fast.

How Rubrik Code Guardian Detects Vulnerability Chains

Unlike traditional code scanning tools that generate isolated alerts, Rubrik Code Guardian identifies attack chains by reasoning across files, services, authentication patterns, and cloud boundaries to surface previously undetectable vulnerabilities3

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. The service runs Claude Mythos 5 through Rubrik's custom security harness against a secure clone of the immutable, air-gapped copy—never against the live repository or production environment1

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. This air-gapped environment enables frontier model level vulnerability analysis while minimizing risk and impact on production systems. "We are using frontier AI to scale vulnerability detection faster than our traditional code scanning tools," said Arvind Nithrakashyap, Co-Founder and Chief Technology Officer at Rubrik2

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. The service validates each attack chain for real exploitability before surfacing findings, then prioritizes them by exploitability, blast radius, and business criticality.

Integration with Developer Workflows Accelerates Remediation

Rubrik Code Guardian pushes confirmed critical issues into developer workflows through integration with Jira or GitHub issues, providing file-level remediation guidance2

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. This direct integration eliminates the gap between vulnerability detection and remediation, enabling development teams to address cyber threats immediately within their existing workflows. The service also maintains recovery workflows so organizations can restore a known-good codebase if a security event or bad build occurs1

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. By focusing on validated findings rather than generating noise, the service helps security teams concentrate resources on genuine threats that require immediate attention.

What This Means for Enterprise Code Security

Rubrik Code Guardian represents a shift in how organizations can protect their core intellectual property against AI-powered attacks. The service is currently accepting select design partners for private preview1

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. As autonomous agents make the digital world more dangerous, enterprises need defensive tools that match the sophistication of frontier AI threats. Anthropic and Rubrik's collaboration demonstrates how advanced AI models can be deployed for defensive purposes, helping organizations test code faster and at far greater scale to bring cyber resilience up to the speed of AI1

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. Watch for broader availability announcements as Rubrik expands beyond design partners, though the company notes that unreleased services may not be made generally available on time or at all2

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