To the people who keep public buildings open.

Every morning, someone unlocks a public building and expects it to work.

The doors open for the right badges. The cameras record the lobby. The gate lifts for the delivery truck. The heat comes on before the first visitor walks in. Nobody thinks about any of it, and that's how it should be.

But every one of those things runs on a small computer. The camera has software and a password. So does the badge reader. So do the gate, the intercom, the visitor kiosk and the box that runs the heating. Many of them share a network with everything else. Some were installed by a contractor years ago and never touched again.

Attackers have noticed government. In 2025, at least 44 U.S. states reported cyber incidents that hit state and local government systems. The devices that guard a building are computers too. They are often the ones nobody is watching.

This book is about those devices. It's for the people who answer for them: security, IT, facilities, physical security, procurement and the leaders who sign off on all of it.

It makes one promise. When something goes wrong at one camera or one door, you should be able to shut down that one problem and leave the rest of the building running.

Then you should be able to prove two things. The attacker's path is closed. And the door still opens for the right person.

Eldad Matityahu

Founder and CEO, NetOps IQ