Prompt Security

Prompt Security provides security solutions for generative artificial intelligence (AI) across various sectors. The company offers a platform that addresses risks associated with Generative AI, including prompt injections, data leaks, and harmful content, through the inspection and regulation of GenAI tool usage. Prompt Security serves sectors that utilize Generative AI in their operations, with a focus on safeguarding applications and employees and maintaining governance. It was founded in 2023 and is based in New York, New York. In August 2025, Prompt Security was acquired by SentinelOne at a valuation between $250M and $300M.