Depthfirst Raises $80M Series B to Advance AI-Powered Cybersecurity…

Team S · 2026-04-02T14:50:13.000Z

San Francisco-based applied AI lab Depthfirst has raised $80 million in a Series B funding round, led by Meritech Capital, as it accelerates the development of AI-native cybersecurity solutions. The round also saw participation from Forerunner Ventures and The House Fund, along with continued backing from existing investors including Accel, BoxGroup, Liquid 2 Ventures, Alt Capital, and Mantis VC, bringing the company’s total funding to $120 million within a short span of time. Founded in 2024, Depthfirst is building an AI-driven security platform designed to identify and fix vulnerabilities across entire software systems. The company focuses on developing domain-specific AI models tailored for high-risk environments, enabling organizations to detect real threats and deploy fixes directly within developer workflows. Alongside the funding, the company introduced its first in-house security model, dfs-mini1, initially focused on securing cryptocurrency smart contracts. The model has demonstrated the ability to outperform existing systems while operating at 10x to 30x lower cost, highlighting the efficiency of specialized AI models in cybersecurity. Depthfirst’s platform is already gaining traction, with adoption by Fortune 500 companies and fast-growing tech firms, as organizations seek advanced tools to combat increasingly sophisticated AI-driven cyber threats. The newly raised capital will be used to expand its AI research team, train additional security models across new domains, and scale enterprise adoption, as the company positions itself at the forefront of next-generation cybersecurity infrastructure. The funding reflects a broader trend in the tech ecosystem, where AI-powered cybersecurity solutions are becoming critical as both software development and cyberattacks evolve rapidly in the AI era.

Member Login Get Access

Depthfirst Raises $80M Series B to Advance AI-Powered Cybersecurity… | Newnex