Depthfirst Raises $40 Million for Vulnerability Management

Depthfirst has raised $40 million in a Series A funding round led by Accel, with Alt Capital, BoxGroup, Liquid 2 Ventures, Mantis VC, SV Angel, and multiple angel investors also participating. The San Francisco-based software security startup, founded in 2024 by DeepMind, Databricks, and Faire technical leaders, has built a platform that identifies, triages, and resolves vulnerabilities across different software and infrastructure layers.

Its General Security Intelligence platform relies on AI agents to understand enterprise systems and respond to AI-empowered attacks at pace, and the company says the platform surfaces eight times more flaws than traditional security solutions, with users including AngelList, Lovable, Moveworks, and Supabase. Depthfirst claims the solution performs deep scans to fully understand a organisation’s code, context, and threat model to identify vulnerabilities before exploitation and harden the global software stack.

The funds will be used to support research and development, go-to-market efforts, and to expand applied research, engineering, product, and sales teams. An executive from AngelList described Depthfirst as “adding an autonomous senior product-security engineer” that has increased the efficiency of their security engineering team.