HackerOne to Bring Anthropic’s Mythos Into Exposure Management Lifecycle, from Discovery to Verified Fix
Frontier cyber AI will be available in select products in the H1 Platform to help enterprises uncover deeper risk and move from insight to action faster
SAN FRANCISCO, September 21, 2026 — HackerOne, a global leader in Continuous Threat Exposure Management (CTEM), today announced the upcoming integration of Anthropic’s Claude Mythos across select H1 Platform products: H1 Code Security Audit and H1 Code. The integration will make frontier cyber AI available in existing security workflows, connecting agentic vulnerability discovery with validation, prioritization, and remediation.
Enterprises are identifying possible exposures faster than ever, yet falling further behind on validating true exposure and making fixes. Frontier AI is widening that gap in both directions. According to H1 Platform data, critical vulnerability mean time to remediate (MTTR) improved by more than 50% over the past 12 months. Over the same period, the unresolved critical backlog grew 29x. As frontier cyber AI increases the speed and depth of discovery, organizations need a scalable way to validate and prioritize what it finds.
The H1 Platform harness will be available with Mythos through discovery of source code vulnerabilities with controls designed to improve coverage, validate model outputs, and bring validated exposures into existing engineering workflows.
"Frontier cyber AI models can do one of two things to a security team," said Nidhi Aggarwal, Chief Product Officer at HackerOne. "It can hand them a longer list, or it can hand them a list they can act on. Which one depends entirely on what sits between the model and the security team. A harness helps turn model output into a validated exposure a security team can act on. We ran and validated the H1 Platform harness for ourselves before any customer saw it."
On the discovery side, H1 Code Security Audit scans full repositories to surface complex vulnerabilities, including compositional vulnerabilities that can span years of commits and multiple authors, and H1 Code reviews pull requests.
“Attackers are already using frontier AI to find and exploit vulnerabilities faster than humans alone can respond,” said Kara Sprague, Chief Executive Officer at HackerOne. “Defenders need access to advanced cyber-capable models, with people accountable for the decisions those models inform and the actions those models take. Finding vulnerabilities faster matters only if organizations can validate, prioritize, and act on them.”
Frontier cyber AI is one layer of coverage. An elite community of security researchers provides another, bringing creativity, contextual understanding, and real-world adversarial expertise to complex attack chains, business logic flaws, and novel exploitation paths. Together, frontier cyber AI and human expertise provide complementary layers of continuous security.
HackerOne does not use or permit use of confidential researcher submissions or customer vulnerability data to train, fine-tune, or otherwise improve generative AI models.
The select H1 Platform offerings will soon be available with Mythos. You can also read more about what HackerOne found running Mythos on its systems as part of Project Glasswing and learn more about the H1 Platform.
About HackerOne:
HackerOne is a global leader in Continuous Threat Exposure Management (CTEM) and the only solution provider that pairs the simultaneous trust of the Fortune 500 and the world's largest community of security researchers to secure the AI-native enterprise. The H1 Platform unites agentic AI solutions with security researchers' ingenuity to continuously discover, validate, prioritize, and remediate exposures across code, cloud, and AI systems. Through solutions such as agentic and human offensive security testing, AI red teaming, code security, validation, and remediation, HackerOne delivers measurable, continuous reduction of cyber risk for enterprises. Industry leaders, including Anthropic, Crypto.com, General Motors, Goldman Sachs, Lufthansa, Uber, UK Ministry of Defence, and the U.S. Department of Defense, trust HackerOne to safeguard their digital ecosystems. HackerOne was recognized in Gartner’s Emerging Tech Impact Radar: AI Cybersecurity Ecosystem report for its leadership in AI Security Testing.