Founded in 1983. Public on NASDAQ. Led by a former U.S. Federal CIO. We've spent decades building the threat intelligence the rest of the industry licenses, aggregates, or imitates. We use it to stop attacks before anyone has to react to them.
Twenty-five years of operating inside federal networks taught us something the commercial market is still learning the hard way. By the time something gets labeled malicious, the connection has already happened. Attackers move faster than detection. They use brand-new infrastructure, disposable cloud, and rotating IPs specifically to stay ahead of tools that wait for a signature or a pattern.
Detect-and-alert architectures aren't broken. They're just on the wrong side of the timeline. We've watched the same incident response replay long enough to know what a real prevention layer would have stopped. So we built one.
Most security companies start with a product and try to earn credibility on the way up. We started with the credibility. Intrusion was founded in 1983 and went public on NASDAQ when the commercial cybersecurity market didn't exist yet. The Global Threat Engine was built inside federal environments where a missed connection isn't an incident report. It's a national-security event.
The federal government doesn't run on detection-first architectures. There's a reason.
Tony Scott, President and CEO, served as the third U.S. Federal CIO, leading cybersecurity policy and operations across the federal civilian government. That perspective is what shapes every product decision Shield makes. And it's why Shield supports the continuous monitoring outcomes federal agencies build under NIST SP 800-137, the Information Security Continuous Monitoring guidance written for the environments we were built for.
Shield doesn't guess. It evaluates every connection across four dimensions of intelligence Intrusion has been building since 2001. If a connection has earned trust, it passes. If it hasn't, Shield blocks it. Automatically. At line speed.
No single dimension makes the call alone. Together they form a reputation no individual signal could produce. That is the engine.
Five load-bearing ideas. Any honest conversation about Shield touches at least three. These aren't features. They're the design constraints we won't break.
Block before the incident. Not detect, alert, or respond after. Shield doesn't produce alerts. It produces blocked events.
Assumed-breach posture. Shield blocks the scan, the probe, and the call-home. The connections an attacker needs to operate, whether they're inbound or already inside.
Inbound and outbound. The outbound side is where Shield earns its keep. C2 beacons, data exfil, lateral call-outs. Most tools watch the front door. Shield watches both doors.
No tuning. No baselining. No specialized training. Shield is live the day you turn it on. Reputation-based, not behavior-based.
The Global Threat Engine is ours. Not aggregated, not licensed, not derived from somebody else's feed. Built and owned by Intrusion. That's the moat.
Shield isn't one box. It's a family of platforms designed to layer onto whatever your stack already looks like. Cloud, on-prem, or endpoint. You don't run all of them. You run the ones that fit.
Cloud, network edge, and endpoint. Each operates independently. Each blocks against the same Global Threat Engine.
Passive monitoring. Carve-out: does not block, does not use threat intelligence, does not integrate with Command Hub. Pure visibility.
Browser-based. Observer, User, and Admin roles. CSV and Excel export for the data your team needs to act on what Shield blocked.
Three independent voices. Three different angles. Same conclusion.
Best threat intel available on the market today, bar none.
Shield prevented a cyberattack in our first week of deployment.
With Shield, bad actors are kept out from the start.
The fastest way to know whether Shield belongs in your stack is to put it on your traffic. A focused Proof of Value engagement shows you exactly what's trying to reach your network, what your existing tools are missing, and what Shield blocks the moment it goes live.
We size the deployment to your environment and confirm what we'll measure.
Shield goes live in your environment and starts evaluating live traffic.
You see exactly what Shield blocked, what your stack missed, and where your gaps are.
Decades of reconnaissance. Federal-grade leadership. A proprietary threat engine the rest of the industry licenses, aggregates, or imitates. The argument is over. The only question is whether you want to see it run on your network.