By Lunarlink Team
The quiet risk in every modern security install — internet-connected cameras, intercoms, and access controllers sitting on a flat network.
The physical security industry spent the last decade moving everything onto IP. Cameras, intercoms, access controllers, even some sensors — all of them speak HTTP, all of them phone home to a manufacturer's cloud, and all of them shipped with a default password printed on a sticker.
The cybersecurity industry noticed. Every major physical-to-cyber breach in the last five years — Verkada, HikVision botnets, the occasional DoorKing compromise — followed the same pattern: a physical device exposed to the open internet, unpatched, with either a default password or a known vulnerability.
The fix isn't complicated. It's segmentation, patching, and credential hygiene — the same hygiene your IT team already applies to servers. Security devices go on their own VLAN with strict ingress rules. Management interfaces are restricted to known hosts. Default passwords die at commissioning; unique credentials get stored in a vault and rotated on role changes.
What gets most clients into trouble isn't the technology — it's that nobody owns the hygiene. The installer leaves, the IT team wasn't consulted, and three years later a consultant finds a Dahua NVR on the internet with its manufacturer login intact.
A good physical installer will volunteer this work. They'll hand your IT team a network diagram, an IP schedule, and a credential handoff document. They'll patch firmware on a schedule you agree on. If they can't or won't do that, the system isn't finished — it's just abandoned in your building.
