Depthfirst Secures $80 Million in Series B Funding for AI Security

AI security startup Depthfirst has announced the successful close of an $80 million Series B funding round, marking significant cybersecurity funding news. This latest Depthfirst Series B funding brings the company’s total raised capital to $120 million, representing a substantial software security investment. The round closed less than three months after its Series A.

The funds will expand AI research, train new models, and scale enterprise adoption. This investment highlights continued growth in the specialized AI security sector.

What Happened: Depthfirst Series B Funding Details

The $80 million Series B investment was led by Meritech Capital. Additional investors include Forerunner Ventures, The House Fund, and previous backers such as Accel, Alt Capital, Box Group, Liquid 2 Ventures, and Mantis VC.

This latest funding round brings Depthfirst‘s total capital raised to $120 million. This follows a Series A round in mid-January, accelerating the company’s financial growth.

Details From Sources

The funding announcement was detailed in SecurityWeek. Depthfirst is an applied AI lab, founded in 2024 by technical leaders from DeepMind, Databricks, and Faire. The San Francisco-based company addresses weaknesses across software and infrastructure layers.

Alongside the funding, Depthfirst launched Dfs-mini1, its first in-house security model. Dfs-mini1 focuses on securing cryptocurrency smart contracts. The model is built on an open source foundation, integrating specialized intelligence into its security platform.

It was trained in security-specific environments. Depthfirst states this training approach generalizes across security domains. This means it extends beyond smart contracts.

Qasim Mithani, Depthfirst co-founder and CEO, commented on the development. He stated, “To win in security, companies will need to deploy security-specific models in products optimized for real security workflows. To build these models, you need specialized data, domain-specific evaluation, and deep expertise in post-training. Our team is one of the few in security able to do that.”

Why This Matters

This significant funding will fuel Depthfirst‘s strategic growth. It empowers the company to advance its mission in AI security. The capital will expand the AI research team and train new security models.

These models will cover additional security domains. Funds will also scale enterprise adoption for Depthfirst‘s solutions. The company aims to address software and infrastructure weaknesses using AI, particularly in vulnerability management AI.

Background Context

Depthfirst, an applied AI lab, was founded in 2024. Its founders include technical leaders from DeepMind, Databricks, and Faire. The company operates from San Francisco.

Its core mission is to address vulnerabilities across software and infrastructure layers. Its previous Series A funding round took place in mid-January. This initial round, combined with the Series B, totals $120 million.

Future Implications (Company’s Stated Plans)

With the new capital, Depthfirst plans specific advancements. These include expanding its AI research team. The company will also train additional security models across new security domains.

A key objective is to scale enterprise adoption of its AI security solutions. These initiatives align with its core mission to enhance software security.

Conclusion

Depthfirst has successfully secured $80 million in Series B funding. This crucial investment reinforces its position in the AI security market. The total funding now stands at $120 million.

This capital is earmarked to advance Depthfirst‘s AI research, model development, and market penetration. The company aims to continue its work addressing complex software and infrastructure vulnerabilities.

FAQ

Q1: How much Series B funding did Depthfirst raise?

A1: Depthfirst raised $80 million in Series B funding.

Q2: What is Depthfirst’s total funding to date?

A2: Depthfirst‘s total funding to date is $120 million.

Q3: Who led Depthfirst’s Series B funding round?

A3: Meritech Capital led Depthfirst‘s Series B funding round.

Q4: What is Dfs-mini1?

A4: Dfs-mini1 is Depthfirst‘s first in-house security model, specifically focused on securing cryptocurrency smart contracts.

Q5: How will Depthfirst use the new funds?

A5: Depthfirst plans to use the new funds to expand its AI research team, train additional security models across new security domains, and scale enterprise adoption.