Security Startups

Prime Security

Agentic product security platform that reviews planned features for design risk before code is written, then guides and verifies the fixes engineering delivers.

Proof of life. Raised a $20M Series A led by Scale Venture Partners, December 2025

About Prime Security

Prime Security, founded in late 2023 with staff in the US and Israel, moves security review to the design phase.

Its agents ingest the tickets and design artifacts engineers submit, score each planned change for risk, and suggest mitigations before development starts, then check the resulting code to confirm the fixes landed.

The agents learn a customer's architecture, code and risk history, and the same platform extends to coding guardrails for AI agents, dependency risk traced through the architecture, and white-box testing that maps service communication and data flows.

It is available through AWS Marketplace. The company says it works with dozens of clients with large engineering teams, naming PayPal, Qualtrics, Bumble and Redis.

Investors

Scale Venture PartnersFoundation CapitalFlybridge Ventures
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