IKARUS Industrial Cyber Security (OT) vs Nozomi Networks NOZOMI ARC™: Side-by-Side Comparison (2026)

Short answer

Mid-market and enterprise teams protecting critical infrastructure need passive network visibility that doesn't interrupt OT uptime, and IKARUS Industrial Cyber Security (OT) delivers that through firmware-level asset discovery and real-time anomaly detection across IEC protocols without requiring agents. The platform covers seven NIST CSF 2.0 functions from asset management through incident mitigation, supported by 24/7 incident response and NIS2 compliance mapping that satisfies regulatory audits. Skip this if your priority is automated response and recovery; IKARUS excels at finding what's broken, not orchestrating fixes across disconnected OT systems. Enterprise and mid-market teams protecting critical manufacturing and utility infrastructure need NOZOMI ARC™ for its ability to catch USB-based attacks and malicious input devices at the host level, a gap most OT security tools leave open. The tool covers six NIST CSF 2.0 functions across asset discovery, continuous monitoring, and threat response, with three enforcement modes that let you move beyond detection when an anomaly demands immediate isolation. Skip this if your environment is mostly IT-facing or you need lateral movement detection across the network; NOZOMI ARC™ excels at endpoint-level control but assumes you have network segmentation and a Nozomi Guardian deployment already in place.