Fortinet acquires AI security startup Virtue AI to bolster its autonomous agent defenses

Fortinet just bought Virtue AI, a startup focused on securing the kinds of autonomous AI systems that enterprises are racing to deploy. The acquisition, announced on August 17, slots Virtue AI’s runtime protection and automated validation technology directly into Fortinet’s FortiAIGate platform. Financial terms weren’t disclosed, with Fortinet describing the deal as immaterial to its overall business. What Virtue AI actually does Virtue AI built technology designed to protect AI systems while they’re actually running, not just during development or after a breach. The startup’s core capabilities include red-teaming agentic systems in protected sandbox environments, continuous validation with audit-ready reporting, and real-time guardrails that enforce governance policies across different modalities. The startup raised $30 million across seed and Series A rounds in 2025, building out its technology during a period when enterprise AI adoption was accelerating faster than security teams could keep up. Fortinet is now absorbing that technology into FortiAIGate, its platform designed to provide security coverage across the full AI lifecycle: prompts, models, agents, and APIs. A market t...