Security Startups

Nullify

Nullify builds AI agents that find, validate and fix vulnerabilities across code and cloud for security and engineering teams at mid-market enterprises and SaaS companies.

Proof of life. Raised a $12.5M seed round led by SYN Ventures, February 2026

About Nullify

Nullify offers what it calls an autonomous AI workforce for product security. Its agents scan code in many languages, including for business-logic flaws such as broken access control. They also detect exposed secrets and test REST and GraphQL APIs.

The platform tries to show which findings are actually exploitable by building reproducible exploits, then ranks risk by reachability and business impact.

It generates fixes and routes them to the right engineers through GitHub, Jira and Slack, keeping security context in a long-term memory store. The company targets mid-sized enterprises and fast-growing SaaS companies.

It is based in San Francisco and has an office in Sydney, Australia.

Investors

Black Nova Venture CapitalSYN Ventures
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