Prompt Security vs Protect AI

Prompt Security is a Tel Aviv-based AI security company founded in August 2023 by Itamar Golan (CEO) and Lior Drihem (CTO), both alumni of Israel's elite Unit 8200 with prior experience at Check Point and Orca Security. The company provides an enterprise platform for securing all generative AI interactions — covering employee AI tool usage (shadow AI discovery, data protection), homegrown AI applications (prompt injection defense, output filtering), AI code assistants, and agentic AI security including MCP gateway protection. Prompt Security is a core contributor to the OWASP Top 10 for LLM Applications. The company raised $23M prior to its acquisition by SentinelOne, which was completed on September 5, 2025. Prompt Security continues to operate as a standalone platform and product brand within SentinelOne's Singularity platform. CRN named it a 2025 Stellar Startup in Security.

Protect AI was a Seattle-based MLSecOps company founded in 2022 by Ian Swanson, Daryan Dehghanpisheh, and Badar Ahmed that built a comprehensive AI and ML security platform. The platform comprised three main products — Guardian (model scanning and supply-chain security), Recon (AI red teaming), and Layer (runtime monitoring) — operating on a unified platform. The company was backed by 17,000+ security researchers via its huntr community and partnered with Hugging Face on threat research. Protect AI was acquired by Palo Alto Networks on July 22, 2025 and its technology has been integrated into Prisma AIRS (AI Runtime Security), Palo Alto's comprehensive AI security platform. Prior to acquisition the company had raised $108.5M total ($14M seed in December 2022, $35M Series A in July 2023, $60M Series B in August 2024), all led by Evolution Equity Partners.