Everything you need to write about MATT.

MATT by Mattersec Labs is the AI Security Supervisor for the modern software lifecycle: it keeps a product’s security rules holding, release after release.

MATT by Mattersec Labs is the AI Security Supervisor for the modern software lifecycle. Teams declare the plain-English rules their product must hold, and MATT runs the ExploitOps loop against the live product on every release: Declare, Observe, Prove, Fix, Remember. Each rule comes back holding or broken, with the evidence attached.

Mattersec Labs introduced ExploitOps in 2026, the practice of keeping a declared set of security rules holding as software changes, and built MATT to run it. A team writes down what must stay true about its product in plain English, such as a user never reading another user’s data or an agent acting only inside its scope. MATT observes what changed, proves each rule against the live product with the same attack patterns an adversary would use, hands a broken rule to its owner with the evidence, and re-proves the fix on every release so the same failure cannot return unnoticed. The company publishes the Record, a running account of the incidents of 2026 in which AI models found or exploited real systems, and an open attack library. It was founded by Subho Halder, co-founder of Appknox and lead author of the SecLens benchmark, and Aishwarya Jain, and is based in San Francisco.