Enzai vs Prompt Security

Enzai is a Belfast, Northern Ireland-based AI governance software company founded in August 2021 by Ryan Donnelly (a leading AI regulation lawyer) and Jack Carlisle (a software engineer). The company builds an enterprise AI governance and enablement platform — branded AI Comply — that helps organizations build AI system inventories, apply policies, map compliance to global regulatory frameworks (EU AI Act, ISO 42001, NIST RMF, GDPR), conduct automated risk assessments, and generate audit-ready reports. Enzai was incorporated on August 13, 2021 (UK Companies House number NI681546) and raised a $4M seed round in September 2023 led by Cavalry Ventures with participation from Seedcamp, Techstart Ventures, and angels. The company holds ISO 27001 certification (since 2023, audited annually by NQA) and integrates with over 50 enterprise tools. Enzai serves financial services, healthcare, insurance, HR, and government customers globally.

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.