depthfirst Secures $40M in Series A Funding

The capital from groups like Accel and angel investors will support its custom AI agents.

Written by Ana Gore
Published on Jan. 14, 2026
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REVIEWED BY
Rose Velazquez | Jan 14, 2026

San Francisco-based AI lab depthfirst secured $40 million in Series A funding. Led by Accel, the round’s notable angel investors include Kristen Green and Jeff Dean. 

The company’s AI platform, General Security Intelligence, is built to find, triage and fix vulnerabilities across all layers of users’ software and infrastructure. Its custom AI agents work 24/7 to secure client companies’ systems. 

The General Security Intelligence platform uses an AI-first defense approach, allowing it to fully understand a customer’s context, code and threat model. The Series A funding will support depthfirst’s research and development, GTM efforts and hiring across product, sales, engineering and applied research.

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