Frenos provides an OT security platform that builds a digital twin of a customer's network and uses its AI reasoning agent, SAIRA, to run fully simulated penetration tests that mimic attacker behavior without scanning hardware or risking production. The platform prioritizes exploitable attack paths and reduces assessment time from months to minutes with zero operational impact. Frenos reported strong growth metrics: ARR up more than 10x since early 2025, 215% revenue growth in H1 2026, a 2.7x year-over-year increase in pipeline, a fivefold rise in average deal size, and 2026 bookings already quadrupling full-year 2025. In one customer environment, SAIRA analyzed over 12,000 OT vulnerability findings and surfaced the eight that were actually exploitable, cutting remediation noise by 99.9%. The company is launching SAIRA Co-Work to provide a persistent OT security co-worker and is researching a next-generation foundation model for long-context reasoning and autonomous workflows. Frenos is based in Fulton, Md.

Total raised

$5M

Funding rounds

2

Latest round

Seed

Latest activity

Jul 2026