How much funding has prompt security raised?

prompt security has raised $23M in total. Its most recent round was a Series A in November 2024.

How many people work at prompt security?

About 46, down 2% over the last 30 days.

Who are prompt security's competitors?

Troj AI, Verax, and TestSavant are among the closest in AI Security. The full competitive set, with overlap scoring, is in the platform.

prompt security

AI SecurityNew York, United Statesfounded 2023acquired by SentinelOne

prompt security is a cybersecurity company specializing in AI Security, founded in 2023 and headquartered in New York, United States. It has raised $23M in total funding, employs about 46 people, and was acquired by SentinelOne in 2025.

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updated Aug 22, 2026

The record

What prompt security did, dated.

Aug 2026PartnershipSentinelOne Expands Collaboration with AWS to Deliver Unified AI Governance
Jul 2026RecognitionPrompt Security Recognized as Top Cybersecurity Product
Jun 2026Feature launchPrompt Security Runtime Guardrails Coming to Amazon Bedrock AgentCore
Aug 2025AcquiredSentinelOne Acquires AI Startup Prompt Security for $250M

Momentum

29 out of 100.

Momentum blends hiring, funding, traffic and sentiment into one score, recomputed daily. The score is free; the pillars behind it unlock in the platform.

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Products

What prompt security sells.

In the platform

The other 440 data points.

Funding historyevery round, every lead investor
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

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FAQ

Common questions about prompt security.

How much funding has prompt security raised?: prompt security has raised $23M in total. Its most recent round was a Series A in November 2024.
How many people work at prompt security?: About 46, down 2% over the last 30 days.
Who are prompt security's competitors?: Troj AI, Verax, and TestSavant are among the closest in AI Security. The full competitive set, with overlap scoring, is in the platform.