Antigen

Antigen is a continuous offensive security platform that deploys AI penetration testing agents against your production systems every night. It maps your entire attack surface—every service, endpoint, and dependency—and automatically probes for vulnerabilities, delivering confirmed findings with evidence and reproduction steps by morning. Each finding is prioritized by exploitability and synced directly into GitHub, Linear, or the Antigen Platform, with actionable remediation guidance. The platform combines nightly AI-driven scans with a monthly human red team assessment, ensuring validated results and expert oversight. It includes attack surface mapping with a live visual map, a SAST GitHub Action for pull request checks (shift-left security), and integrations across major cloud and dev tools (AWS, GCP, Kubernetes, Vercel). Antigen detects critical vulnerabilities like SQL injection, SSRF, JWT algorithm confusion, and hardcoded API keys. Designed for enterprise security teams and DevOps engineers, Antigen emphasizes developer-friendly workflows: vulnerabilities appear in the tools engineers already use, with evidence traces and clear remediation steps. The platform also supports compliance-focused organizations needing auditable, evidence-backed reports. Compared to traditional pen testing services, Antigen offers continuous, automated testing rather than point-in-time assessments. Its AI agents provide broader coverage of the attack surface, while the monthly human red team adds validation and depth. However, its enterprise-grade pricing and focus on production environments make it less suitable for small teams or personal projects.