Prompt Security vs TrojAI

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.

TrojAI is a Saint John, New Brunswick-based AI security company founded in 2019 by James Stewart and Stephen Goddard. The company provides an enterprise AI security platform with two core products: TrojAI Detect (pre-deployment model red teaming and vulnerability assessment) and TrojAI Defend (runtime AI firewall for AI applications and agents). In 2025, TrojAI extended Defend to cover MCP (Model Context Protocol) server governance, providing visibility and policy enforcement for agentic AI workflows. TrojAI serves primarily large enterprise customers in financial services and technology, helping them align with NIST, OWASP, MITRE ATLAS, and CSA frameworks. The company participated in Google's 2023 accelerator program for Canadian startups and was listed on the Vector Institute's '20 Canadian AI Startups to Watch.' TrojAI raised $5.75M in seed capital in April 2024 and maintains offices in Saint John, Fredericton, and Boston.