Shield brings prevention-first network security to critical infrastructure environments. Shield blocks malicious traffic at the network layer using the Global Threat Engine and 8.5 billion IP and DNS combinations refined since 2001.
| What it does | Blocks malicious network traffic at the network layer using reputation-based threat intelligence. |
|---|---|
| Who it's for | Security teams needing prevention-first network defense. |
| How it deploys | Shield's five products cover cloud, Shield OnPremise, endpoint, monitoring, and management. |
| What you get | Prevention of known-bad connections with full evidence of what was blocked. |
Plant networks, industrial control systems, and operational technology environments are full of devices that will never run an endpoint agent. Shield protects them at the network. Observe-only mode first, so nothing changes on the plant floor until you are ready.
OT teams operate under a constraint that IT teams rarely face: a security tool that causes a five-minute production stop is worse than the threat it was supposed to prevent. Shield is built around that constraint.
PLCs, HMIs, RTUs, smart sensors, vendor-managed equipment. The endpoint approach does not work in OT. Shield protects at the network so device-side coverage is not required.
An IT false positive is a help-desk ticket. An OT false positive can stop a production line. Shield uses reputation-based blocking against known-bad destinations, not behavior-based detection that flags unfamiliar protocol traffic.
OT teams need to see what is on the network before anything blocks. Shield runs in observe-only mode first. You see the traffic. You decide what to block. You stay in control.
Shield is the rare network security tool that fits an OT environment without forcing you to instrument every device or learn a new protocol parser.
Shield supports the network monitoring, access control, and audit logging requirements your auditor will ask about. The mapping below is the short version. The full crosswalk lives on the Compliance page.
Shield supports NIST 800-82 guidance for ICS network monitoring, asset visibility, and boundary protection in operational technology environments without requiring endpoint instrumentation.
Shield enforces traffic policy at conduits between zones, blocking known-bad destinations on cross-zone traffic without requiring changes to control system devices.
Most cyber insurance underwriters now require evidence of network monitoring on OT segments. Shield event logs and Syslog feeds support those underwriting questions.
Most OT environments have never had network-level visibility on their plant networks. Shield in observe-only mode shows traffic patterns and unmanaged devices on day one.
Shield deploys inline without requiring a maintenance window for most networks, or via span port for pure observation. No PLC firmware updates. No HMI changes.
OT segments now produce the network monitoring evidence that cyber insurance carriers and corporate auditors are increasingly requiring.
A short proof of value runs Shield on a non-critical OT segment in observe-only mode. We document what we find together. Nothing on the plant floor changes until you say so.
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