RunSybil announced a $40 million capital injection led by Khosla Ventures to fuel development of its offensive security platform. Rather than focusing on static code analysis, RunSybil’s AI-native solution enables AI agents to conduct security testing without requiring source code access.
“Traditional security testing only looks at what you tell them to test. Bug bounty hunters cherry-pick obvious targets. Both approaches miss huge chunks of your actual attack surface,” Ari Herbert-Voss, RunSybil’s CEO and co-founder, said in a statement. “We’re the first to provide comprehensive black-box testing using AI to reason like a security researcher and find critical vulnerabilities without ever seeing a line of code.”
The company’s customer base includes organizations like Cursor, Turbopuffer, Notion, Baseten, Thinking Machines Lab and several of the Fortune 500. Backed by its venture capital, RunSybil plans to invest in engineering, expand its security research capabilities and fuel go-to-market initiatives. It is also actively hiring engineering, research and customer-facing talent.
