Sometimes a Wi-Fi password just isn’t enough to keep a neighbor or a stranger from stealing your Internet connection. You may notice that websites, videos, or file transfers aren’t moving as fast as they used to. The problem may not be theft, but simply a case of too many devices trying to share a slow connection.
To get to the root of the issue you can use a free app for Windows. Let’s investigate:
Step 1: Install a copy of Who Is On My WiFi (henceforth known as WIOMW).
Step 2: After opening the app, follow the tutorial steps, which will initiate your first (and likely a second) network scan.
You can configure the port range that will be scanned, but if you just want to get started, you don’t need to mess with any settings.
(I had 8 devices using my Wi-Fi and didn’t realize it. But it was OK… kid’s & wife’s phones, lap tops, kindles etc – used the app and the deleted it. And it deleted easily).