A cheap smart plug running years-old firmware can sit on the same network as the laptop you bank on. IoT isolation keeps one hacked gadget from reaching everything else — here’s the easy way and the thorough way to do it.

Your home Wi-Fi has no boundary between your work laptop and everything else on it. Here’s how router-level segmentation closes that gap.

A guest or IoT network can separate smart TVs, streaming devices, cameras, and speakers from laptops, phones, work devices, and local files—but casting and remote-control features need testing.