SIGA Data Security

SIGA Data Security (operating publicly as SIGA OT Solutions) builds anomaly detection technology for operational technology and industrial control system environments, targeting critical infrastructure sectors including energy, water, oil and gas, chemicals, and manufacturing. Rather than monitoring OT network traffic and protocols the way most ICS security vendors do, SIGA instruments the raw electrical and waveform signals coming directly from field-level sensors and actuators — what the company calls Level 0 of the Purdue model — and applies machine learning to flag physical-process anomalies that never generate network traffic an IT/OT monitoring tool would see.

Founded in 2014 and headquartered in Be’er Sheva, Israel, SIGA raised an $8.1 million Series B round in 2021 led by Dutch investor PureTerra Ventures, with participation from Israeli fund SIBF, Moore Capital, and Phoenix Contact — a German industrial automation manufacturer whose strategic investment lends some operational credibility given its own footprint in the industrial control space. Total disclosed funding is roughly $15 million, modest next to network-layer OT security incumbents like Claroty, Dragos, and Nozomi Networks, which have each raised hundreds of millions.

SIGA has published case studies describing deployments at water utilities managing large physical footprints (in one case spanning roughly 20 dams and 2,000 kilometers of pipeline), and argues its physical-layer approach addresses a documented compliance gap — SIGA-cited surveys put water-system EPA cybersecurity non-compliance above 70%. The company’s pitch is narrow and technically specific rather than broad platform coverage, which is both its differentiator and its limitation: it complements, rather than replaces, network-based OT monitoring.