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.

Step 01The attacker maps your ports, services, and topology. Most tools generate zero alert. He's taking notes. You don't know he's there.
Step 02Internal services, active hosts, communication patterns — all enumerated. The attacker now has a blueprint of your environment.
Step 03Now he acts. The breach isn't reckless. It's surgical. Recon made it possible.
The fixNone of this should have happened. Intrusion stops reconnaissance before a single data point is gathered.
How We Fix It
Every Attack Has a Starting Point — Intrusion blocks at Stage 1 Recon before attackers can map your environment
Intercept 01 — Inbound

End the stakeout
before it starts.

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

Intercept 02 — Outbound

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.

Shield Ecosystem

One platform. Every environment.

Six deployment options. One intelligence layer. Managed from a single console regardless of where your environment lives.

Cloud / AWS
Shield Stratus
Prevention-first protection native to cloud environments.
Network
Shield Sentinel
100Gbps decoding and logging at wire speed.
On-Premise
Shield OnPrem
Edge hardware blocking at the network perimeter.
Device
Shield Endpoint
Zero Trust protection for remote users and devices.
Firewall / NAT
Shield Gateway
Intelligent traffic control at the network boundary.
Management
Command Hub
One console. Every Shield deployment. Total visibility.
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.
Find Your Track

Who are you defending?

The game is your network. Pick your position.

Enterprise
Large-scale enforcement for complex, distributed environments.
Explore →
Federal Gov
Agency-grade intelligence built for the federal threat profile.
Explore →
MSP Partners
White-label Shield across your client base. Margin-rich packaging.
Explore →
State & Local
Enterprise protection without enterprise complexity. Instant-on.
Explore →
Sheriff / LE
The POSSE program. Purpose-built for law enforcement agencies.
Explore →
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.
The largest IP reputation database of its kind. The same data that has protected classified networks is now available to every organization, regardless of size or sector.
Federal
Agency & Defense Networks
Government-grade threat intelligence built from 20+ years of federal environment data. Designed for the security posture and adversary profile of federal networks.
State & Local
Municipalities & Law Enforcement
The most frequently targeted and most under-resourced. Shield delivers enterprise-grade protection without enterprise-grade complexity. Instant-on. No dedicated security team required.
Education
Districts, Campuses & Research Networks
Sensitive student data, research assets, open architectures. Shield stops reconnaissance before these environments are mapped and staged for attack.
POSSE Program
Protecting Our Sheriffs' Security Everywhere
Intrusion's POSSE program deploys Shield specifically for law enforcement, protecting the agencies that protect communities.
Channel Program

Designed for partners
who protect.

The Intrusion Partner Network gives MSPs a prevention-first product their clients cannot find anywhere else — with the margin structure, onboarding support, and technical resources to make it stick.

White-Label Ready Margin-Rich Packaging Co-Sell Support Technical Onboarding National Coverage
Become a Partner
01
Fast Client Onboarding
Shield deploys in minutes with zero baselining. Your team is not the bottleneck. Clients are protected from day one.
02
Differentiated Product
Prevention at the recon stage is not in the standard MSP stack. Shield gives you a story no competitor can match.
03
Command Hub for Multi-Tenant
Manage every client deployment from a single console. Full visibility, centralized alerts, streamlined reporting.
Defend the Game

Everything worth protecting
is the game.

People think the game is a sport.

The game is the power grid. The game is the hospital that can't go dark. The game is the school district that holds your child's records. The game is the election, the supply chain, the water treatment plant, the financial system that moves trillions while you sleep.

Every attacker who sits in a parking lot and cases a building is playing a game. They study. They plan. They wait for the moment your defenses look the other way.

Intrusion is built for the people who refuse to let them win.

Critical Infrastructure
The Grid
Power, water, transportation. The systems that cannot fail are the ones attackers target first.
Public Safety
The Hospital
Ransomware on a hospital network is not a data breach. It is a threat to human life. Shield blocks the recon that makes it possible.
Community
The School
Children's data, research networks, open architectures. The most under-resourced environments face the same adversaries as the Pentagon.
Commerce
The Enterprise
Every company that moves product, processes payments, or holds customer data is a target. The attacker cased your network before you knew he existed.
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
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.

Book a Demo See Technical Proof Explore for Partners