depthfirst Raises $80M in Series B Funding

The security lab introduced its first in-house model, dfs-mini1, initially focused on finding weaknesses in cryptocurrency smart contracts.

Round size
$80M
Stage
Series B
Headquarters
United States
Announced
Mar 31, 2026

Specialized models inside the security platform

dfs-mini1 starts from an open-source model and uses reinforcement learning in security-specific environments. It adds specialized intelligence to General Security Intelligence, which analyzes application context and gives developers fixes they can review and merge.

A second round within three months

The financing follows January’s $40 million Series A and brings total funding to $120 million. Capital will support additional security models, a larger research team and enterprise adoption. Customers include ClickUp, Lovable, Supabase, incident.io and Moveworks.

Previous rounds

Series A · $40M

Sources

  1. depthfirst: funding announcement
  2. SecurityWeek: Series B coverage
  3. depthfirst: product and January financing
03 / Related rounds

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02
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03
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