Agentic security company Straiker Inc. today revealed that it has raised $64 million in new funding to expand a platform built that secures the artificial intelligence agents now spreading across enterprise systems.

The Mountain View, California-based company sells agentic security, software that discovers AI agents running inside an organization, tests them for weaknesses ahead of deployment, and monitors their behavior once they go live. Straiker emerged publicly in March 2025 with $21 million in initial funding.

Agents differ from traditional software in that they reason on the fly and act on their own across connected systems. Straiker argues that independence opens a class of risk that older, rule-based controls were not designed to catch.

Recent incidents have made the threat concrete. BleepingComputer reported earlier this month that attackers tricked Meta Platforms Inc.’s AI support agent into resetting account passwords, hijacking more than 20,000 Instagram accounts that lacked two-factor authentication without breaching Meta’s core systems. In adversarial testing by Straiker’s STAR Labs research arm, the company said 36% of successful attacks on coding agents led to remote code execution, while 91% of attacks on productivity agents resulted in silent data theft that left behind no malware and no stolen credentials.

Straiker’s platform combines three functions: discovery of agents across an enterprise, pre-deployment testing to surface vulnerabilities, and runtime protection that blocks threats as they occur. The company says threats caught in production feed back into its testing, while flaws found in testing harden its live defenses. Its work with frontier AI labs, it added, gives early sight of new attack techniques.

The founders carry security pedigrees. Chief Executive Ankur Shah previously ran Palo Alto Networks Inc.’s Prisma Cloud business as senior vice president and general manager, while Chief Technology Officer Sreenath Kurupati led AI and security research at Akamai Technologies Inc. after it acquired Cyberfend Inc., the fraud detection startup he founded.

“Demand is outpacing anything we forecast,” Shah said in a statement. “This round goes straight into product, our STAR Labs threat research and the global expansion our enterprise customers are pulling us toward.”

The company said run-rate revenue has grown more than 15-fold in under a year, off an undisclosed base. It counts frontier AI labs and Fortune 500 companies among its customers.

The Series A round was led by Marathon Management Partners alongside Citi Ventures, Illuminate Ventures and Workday Ventures, with prior backers Bain Capital Ventures and Lightspeed Venture Partners LP also taking part. Gokul Rajaram, a founding partner at Marathon, is joining Straiker’s board.

Image: Straiker