LIVE CISA KEV Feed
Loading threat data...
Prevention-First Network Security

YOUR NETWORK IS BEING WATCHED.

Intrusion Shield blocks malicious connections before the attack begins.
Inbound recon. Outbound C2. Stopped at contact.

Attacker surveilling network infrastructure — Intrusion Shield stops reconnaissance before it starts

Before any attacker launches a single exploit, they spend weeks in the stakeout. Scanning. Mapping. Learning every exit. Most security tools are pointed at the vault. Nobody's watching the street outside. We do.

8.5B
IP Reputation Database
40+
Years Company Heritage
0
Baselining Required
Gov.
Grade
Threat Intelligence
The Problem

No One Is Watching
the Parking Lot.

A bank robber doesn't walk through the front door on day one. He cases the joint first. He sits in the parking lot. He maps the cameras, counts the guards, studies the schedule, and identifies every exit. Then, and only then, does he make his move.

Cyber attackers work the same way. Before a single file is touched or a single credential is stolen, they spend weeks, sometimes months, on the stakeout. Scanning your network. Mapping your infrastructure. Learning exactly where to hit.

Here's the problem: most security tools are pointed at the vault. Nobody's watching the street outside. By the time an alert fires, the attacker already knows your building better than you do.

How We Fix It

We Burn the Blueprints.

Intrusion Shield catches attackers during reconnaissance, before they gather a single data point about your environment, and again the moment a compromised device tries to call home. Two intercepts. Both decisive.

Every attack has a starting point. Everything else comes after.
Stage 1: Recon Stage 2: Access Stage 3: Exploit Stage 4: Move Stage 5: Exfiltrate
01

End the stakeout before it starts.

Shield checks every inbound connection against an 8.5 billion IP reputation database and blocks reconnaissance before the attacker maps a single service. He pulls up outside your building. Shield tells him to keep driving.

02

Cut the cord before he calls his crew.

If a compromised device attempts to reach hostile infrastructure, Shield intercepts and terminates the connection before data moves. The call home never completes. The crew never gets the signal. The job gets called off.

Why Intrusion

Detection finds the breach.
We prevent it.

Shield doesn't replace your stack. It stops threats before they reach it, so every tool downstream sees less noise and handles fewer incidents.

vs SIEM / SOC
Less noise. Better signal.
SIEMs catch what gets through. Shield stops the recon that makes the attack possible. Your SIEM gets fewer events and higher-quality incidents worth investigating.
vs EDR / XDR
Upstream prevention, not just detection.
EDR catches what reaches the endpoint. Shield stops what never should have gotten there in the first place. Both layers working together is the strongest possible posture.
vs Firewall / Threat Intel
Intelligence that acts, not just informs.
Most feeds tell you what to watch. Firewalls enforce known rules. Shield acts on 8.5B IP reputation data automatically, the moment contact is made, inbound or outbound.
Built for the Most Targeted Networks on Earth

Government-grade intelligence.
Commercial-scale enforcement.

Intrusion was founded in 1983. Our threat intelligence has been running since 2001, forged in federal environments that nation-state adversaries never stop targeting. That intelligence is now available to every organization, regardless of size or sector.

Leadership

Led by a Former Federal CIO

CEO Tony Scott served as Federal CIO of the United States. He operated at the highest levels of government cybersecurity and built Intrusion to that standard.

Heritage

Founded in 1983. Intelligence Since 2001.

Intrusion has protected federal infrastructure for decades. Our threat intelligence dataset has been built and refined since 2001, forged in environments nation-state adversaries never stop targeting.

Scale

8.5 Billion Reasons to Be Confident.

One of the most comprehensive IP reputation databases in the industry. The same data that has protected classified networks is now available to every organization, regardless of size or sector.

Get Started

No recon. No roadmap.
No attack.

Every attacker needs information before they can move. Deny them that information. Intrusion blocks reconnaissance, cuts off malicious infrastructure, and stops bad outbound communication before it turns into an incident.

Trusted by Organizations That Cannot Afford to Be Wrong
Shield was running and blocking threats within the hour. We didn't have to touch anything.
Director of IT Security, Federal Agency
We went from reactive to preventive overnight. The recon blocking alone justified the investment.
CISO, Fortune 500 Enterprise
Our county had three IT staff and zero budget for a security team. Shield changed what was possible for us.
County IT Director, State & Local Government
The Intrusion Defenders standing watch over a connected city skyline

Some networks have guardians.
Yours is about to meet them.

Meet the Defenders →