Prompt Security
Prompt Security is an Israeli cybersecurity company. The company developed an enterprise platform designed to secure employee use of AI and protect in‑house AI applications by providing real‑time visibility, policy enforcement, and automated risk mitigation for GPT‑style systems and other generative AI deployments.
| Company type | Private |
|---|---|
| Industry | Cybersecurity |
| Founded | August 2023 |
| Founder | Itamar Golan; Lior Drihem |
| Headquarters | Tel Aviv, Israel |
Area served | Worldwide |
Key people | Itamar Golan (CEO; 2023–present); Lior Drihem (CTO; 2023–present); Vitaly Neyman (Chief Architect; 2024–present); Yoav Lasman (VP of R&D; 2025–present); Uri Golan (Head of Operations; 2023–present); Jeffrey Maier (VP of Revenue; 2024–present); Yael Macias (Head of Marketing; 2024–present); Benjamin Preminger (Head of Product; 2024–present) |
Number of employees | 50 (2025) |
| Website | www.prompt.security |
Prompt Security is an Israeli cybersecurity company. The company developed an enterprise platform designed to secure employee use of AI and protect in‑house AI applications by providing real‑time visibility, policy enforcement, and automated risk mitigation for GPT‑style systems and other generative AI deployments.[1][2][3]
History
[edit]Prompt Security was founded by Itamar Golan and Lior Drihem to address emerging security risks in applications that incorporate GPT‑like capabilities in Tel Aviv in August 2023.[4] Before founding Prompt Security, Itamar Golan and Lior Drihem collaborated at Orca Security on the development of an initial generative AI feature within a security tool.[5][6][7]
On 24 January 2024, Prompt Security emerged from stealth after completing a seed financing of US$5 million led by Hetz Ventures, with participation from Four Rivers and angel investors affiliated with the Cyberfuture global CISO investment alliance.[8][9]
In 2024 the company won Check Point's CPX 2024 Innovation Sandbox and was named among Mako’s "21 Most Promising Startups in Israel"[10] and Calcalist’s "Top 50 Most Promising Israeli Startups".[11]
On 20 November 2024, Prompt Security announced a Series A financing of US$18 million led by Jump Capital, with participation from Hetz Ventures, Ridge Ventures, Okta Ventures, and F5.[12]
On 5 August 2025, Prompt Security announced that it had entered into an agreement to be acquired by SentinelOne; the acquisition amount was not publicly disclosed.[13][14][15][16]
In 2025, the company was included in industry lists such as CRN’s "10 Cybersecurity Startups To Watch",[17] Calcalist’s "Top 50 Most Promising Israeli Startups",[18] and Fortune & Evolution Equity Partners’ "Top 50 Cybersecurity Companies".[19]
In May 2025, SentinelOne signed an agreement to acquire Prompt Security for $300 million.[20]
Activities
[edit]Prompt Security developed an all‑in‑one enterprise platform to secure employee AI usage and protect homegrown AI applications.[21][22] The company provided services internationally, with the United States, the United Kingdom, and Israel identified as the largest markets for its services.[23]
References
[edit]- ^ "Prompt Security secures generative AI". The Jerusalem Post. 25 January 2024. Retrieved 2025-10-02.
- ^ "SentinelOne to buy Israeli startup Prompt Security for $300M". Globes. 8 April 2025. Retrieved 2025-10-02.
- ^ גלעד, אסף (4 August 2025). "Prompt Security news". Globes. Retrieved 2025-10-02.
- ^ "Startup Prompt Security founded in Tel Aviv". Calcalist. 4 August 2025. Retrieved 2025-10-02.
- ^ "How AI-powered hackers are stealing billions". The Economist. Retrieved 2025-10-02.
- ^ "Prompt Security launches platform to secure generative AI". TechStrong. 24 January 2024. Retrieved 2025-10-02.
- ^ "Despite reserve duty, startup Prompt Security raises $5M". Globes. 25 January 2024. Retrieved 2025-10-02.
- ^ "Euro Seed 50 by Creandum". TrySpecter. 8 July 2025. Retrieved 2025-10-02.
- ^ "Prompt Security secures generative AI". The Jerusalem Post. 25 January 2024. Retrieved 2025-10-02.
- ^ "Top 21 Most Promising Startups in Israel". Mako. Retrieved 2025-10-02.
- ^ "Top 50 Most Promising Israeli Startups". Calcalist. 13 May 2024. Retrieved 2025-10-02.
- ^ "Prompt Security raises $18M Series A". Calcalist. 20 November 2024. Retrieved 2025-10-02.
- ^ "SentinelOne to acquire Prompt Security". Asia Business Outlook. Retrieved 2025-10-02.
- ^ "SentinelOne to acquire Prompt Security to advance GenAI security". SentinelOne. Retrieved 2025-10-02.
- ^ "SentinelOne completes acquisition of Prompt Security". The Globe and Mail. Retrieved 2025-10-02.
- ^ "SentinelOne completes acquisition of Prompt Security". TipRanks. Retrieved 2025-10-02.
- ^ "10 Cybersecurity Startups To Watch in 2025". CRN. Retrieved 2025-10-02.
- ^ "Top 50 Most Promising Israeli Startups". CRN. Retrieved 2025-10-02.
- ^ "Top 50 Cybersecurity Companies". Evolution Equity. Retrieved 2025-10-02.
- ^ "SentinelOne to buy Israeli startup Prompt Security for $300m". Globes. 2025-04-08. Retrieved 2026-03-19.
- ^ "Prompt Security raises $18M to secure generative AI tools". Business Insider. Retrieved 2025-10-02.
- ^ "Prompt Security wants to make GenAI safe for the enterprise". TechCrunch. 24 January 2024. Retrieved 2025-10-02.
- ^ "Health care organizations adopt AI safely with Prompt Security". Newsweek. 7 April 2025. Retrieved 2025-10-02.