Rubrik Code Guardian red-teams code and prioritises cyber risks

Rubrik, the security and AI operations company, has unveiled Rubrik Code Guardian, a custom Claude Mythos 5 harness that red-teams customers’ code based on an air-gapped copy of their repository. A harness turns an AI model into an agent.

“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 Anthropic.

“Rubrik will use the model to test code faster and at far greater scale, and to bring cyber resilience up to the speed of AI.”

The new service uncovers and prioritises the multistep vulnerability chains an attacker would actually exploit, validates each for exploitability, and turns confirmed critical issues into tracked remediation.

“Frontier models are advancing at a fast pace. In the wrong hands, these models can be used to discover, chain, and exploit vulnerabilities at machine speed,” said Arvind Nithrakashyap, Co- Founder and CTO at Rubrik.

“To move just as fast, we are using frontier AI to scale vulnerability detection faster than our traditional code scanning tools. We took Anthropic’s powerful model and built a Rubrik software harness to test on our code. We are using that experience and success now to give customers access to the harness, with a secure, isolated environment, which means we can run analysis of their code away from live repository and production systems.”

Rubrik Code Guardian makes critical enterprise systems more resilient to even the most advanced frontier AI-powered attacks. The product embeds and harnesses Anthropic’s Claude Mythos 5 into a service that operates directly on air-gapped copies of source code, enabling frontier model level vulnerability analysis while minimising risk and impact on production environments.

Rubrik Code Guardian proactively secures the core intellectual property that powers modern businesses:

Red-team customer code safely

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 environment.

Attack chains, not alerts

Reasons across files, services, authentication patterns, and cloud boundaries to surface previously undetectable vulnerabilities, even “chained vulnerabilities” that advanced AI attacks now exploit. 

Validated findings, prioritised by business criticality

Validates attack chains for real exploitability before surfacing them and prioritises findings by exploitability, blast radius, and business criticality. 

Accelerated remediation

Pushes confirmed critical issues into developer workflows through Jira or GitHub issues with file-level remediation guidance.

Built-in code resilience

Maintains recovery workflows so organisations can restore a known-good codebase if a security event or bad build occurs. 

Details 

Rubrik Code Guardian is currently accepting select design partners for private preview. 

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