Prompt Security
Category: AI in Cybersecurity
All-in-one enterprise platform securing employee AI usage and homegrown AI apps with comprehensive real-time visibility, policy enforcement, and risk mitigation Prompt Security was founded in 2023. The company is led by Itamar Golan. Based in New York, United States. Team size: 11-50. Total funding raised: $23M. Latest round: Acquired by SentinelOne (2025) for $250M. Key investors include Jump Capital, Hetz Ventures, Ridge Ventures, Okta Ventures, F5, Four Rivers Group.
- Founded
- 2023
- Headquarters
- New York, United States
- Team size
- 11-50
- Total funding
- $23M
Value proposition
Real-time visibility, control, and protection for AI applications, ensuring secure AI adoption without hindering innovation or productivity
Products and solutions
Runtime AI Security Platform, Data Leakage Prevention (DLP) for AI, Intelligent Agent Protection, Prompt-Level Security Monitoring, AI Red Teaming, MCP Gateway for Agentic AI Security
Unique value
Focus on securing AI at runtime with industry-first AI runtime security capabilities, addressing the niche gap in preventing data exposure and misuse during active AI operations
Target customer
Enterprises leveraging Generative AI, including Fortune 500 companies, in sectors like finance, healthcare, and technology
Industries served
Enterprise AI Adoption, Cybersecurity, Financial Services, Healthcare, Technology, Government & Defense
Technology advantage
Proprietary AI runtime monitoring and enforcement engine, combined with deep integration into enterprise workflows for seamless security. Core member of OWASP Top 10 for LLM Apps research team
How they differentiate
Prompt Security specializes in GenAI security as a dedicated category rather than a feature, offering a platform tailored to enterprise generative AI risks with capabilities like OWASP-integrated protections and runtime monitoring
Main competitors
Palo Alto Networks, Crowdstrike, Aim Security (acquired by Cato Networks)
Key partnerships
SentinelOne (Acquirer, 2025), Jump Capital, Hetz Ventures, Ridge Ventures, Okta Ventures, F5
Notable customers
HiBob, Ion Bank, Telethon, Zeta Global, Accenture, The New York Times, Elastic, Upstream Security
Major milestones
Raised $18M Series A in 2024 led by Jump Capital, Raised $5M Seed round in 2024 led by Hetz Ventures, Acquired by SentinelOne in 2025 for $250M, Recognized in CRN 2025 Stellar Startup in Security, Core member of OWASP Top 10 for LLM Apps research team
Growth metrics
N/A (private company)
Market positioning
Positioned as a leader in securing generative AI adoption, targeting enterprises needing specialized AI risk management solutions. Creator of the AI security category rather than just a feature
Geographic focus
Primarily North America (headquartered in New York), with global enterprise customers and expansion into international markets
Patents and IP
No publicly disclosed patents, but leverages proprietary technology for AI security and runtime monitoring
About Itamar Golan
15+ years at the intersection of AI and cybersecurity, having worked in organizations like the IDF, Check Point, and Orca Security. Core member of the OWASP Top 10 for LLM Apps research team.
Official website: https://prompt.security