Introducing Chainguard Harness: Vulnerability hunting and remediation powered by Claude Mythos 5.1, no model access required

Today, we're introducing Chainguard Harness, a new offering that uses frontier AI models like Anthropic’s Claude Mythos 5.1 to hunt down exploitable vulnerabilities in an organization's application code and create a validated, reproducible report with recommended fixes. Alongside the introduction of Harness, we’re also announcing its availability through the Claude Marketplace by Anthropic, allowing organizations to put a portion of their existing Anthropic commitment toward finding and fixing exploitable vulnerabilities. We’re opening the beta waitlist for Chainguard Harness today. Frontier models that perform vulnerability discovery across first-party and open source code have been mostly available to a select group of organizations performing defensive security work for critical infrastructure. Chainguard Harness is now bringing a frontier harness to organizations that lack access or the security and engineering expertise to do so in the face…