SentinelOne Expands Into GenAI Security with Prompt Security Acquisition

Deal News | Aug 05, 2025 | Hetz Ventures Management Ltd

SentinelOne Expands Into GenAI Security with Prompt Security Acquisition

SentinelOne, a prominent NYSE-listed cybersecurity firm, has announced the acquisition of Prompt Security, an Israeli startup specialized in securing generative AI in runtime, to expand into the increasingly crucial field of AI security. Prompt Security, founded recently in 2023 by former cybersecurity experts Itamar Golan and Lior Drihem, has developed a platform to secure AI interactions within organizations. The acquisition deal, mixing cash and stock, is foreseen to close in SentinelOne's third fiscal quarter, subject to regulatory nods. This transaction highlights SentinelOne's strategic pivot into the rapidly growing and less regulated domain of generative and agentic AI, reportedly valued around $250 million, offering a solid return to its investors including Hetz Ventures and other tech giants. Industry whispers indicate rising acquisition interests in the AI security space, demonstrated by multiple recent high-value acquisitions, positioning AI at the forefront of transformative enterprise technology.

Sectors

  • Cybersecurity
  • Artificial Intelligence
  • Venture Capital

Geography

  • Israel – Prompt Security, the acquired startup, is based in Israel, emphasizing the nation's role as a high-tech innovation hub.
  • United States – SentinelOne is a cybersecurity firm listed on the NYSE, based in the US, showing the cross-border nature of tech acquisitions.

Industry

  • Cybersecurity – The article discusses SentinelOne's strategy in enhancing cybersecurity measures against AI-related vulnerabilities through its acquisition of Prompt Security.
  • Artificial Intelligence – Focuses on generative AI and its security which is vital to the discussed acquisition, underscoring AI's transformative impact on cybersecurity.
  • Venture Capital – Venture capital firms were major investors in the target company, Prompt Security, showcasing the role VC plays in the lifecycle of tech startups.

Financials

  • $250 million – Estimated value of the SentinelOne acquisition of Prompt Security.
  • $23 million – Total amount raised by Prompt Security prior to acquisition.

Participants

NameRoleTypeDescription
SentinelOneBidding CompanyCompanyNYSE-listed cybersecurity firm acquiring Prompt Security to expand AI security capabilities.
Prompt SecurityTarget CompanyCompanyIsraeli startup specializing in securing generative AI interactions in organizations.
Hetz Ventures Management Ltd.InvestorCompanyIsraeli venture capital fund and investor in Prompt Security.
Itamar GolanCEO and Co-founderPersonCEO of Prompt Security, former AI division founder at Check Point and Orca Security.
Lior DrihemCTO and Co-founderPersonCTO of Prompt Security, former Director of Innovation at Check Point.