Home / Business and Economy / Mandiant Founder's New AI Security Startup Raises $255M
Mandiant Founder's New AI Security Startup Raises $255M
2 Oct
Summary
- Armadin raised $255.5 million at a $2.5 billion valuation.
- The funding round was led by Andreessen Horowitz and Accel.
- Armadin uses agentic swarms for continuous security testing.

Kevin Mandia, the visionary behind Mandiant, has successfully raised $255.5 million for his latest venture, Armadin. This Series B funding round, with a valuation exceeding $2.5 billion, was spearheaded by prominent investors Andreessen Horowitz and Accel. The influx of capital follows a substantial $190 million Series A raised just six months prior, bringing Armadin's total funding to over $445 million.
Armadin is pioneering a novel approach to enterprise security by reimagining defense testing for the age of artificial intelligence. Moving beyond conventional penetration tests, the company deploys always-on agentic swarms. These sophisticated systems chain together vulnerabilities to emulate cyberattacks, enabling organizations to proactively identify and patch security weaknesses before malicious actors or rogue AI agents can exploit them.