

SoftPerfect Wifi Guard will scan your system every half hour, though, and if anything new and unknown has connected in the meantime then you'll be informed via a suitable pop-up alert. Which, initially at the list, will probably dwindle to nothing at all.

If you recognise a device as legitimate - a network storage device, say, or another system on your network - then right-click it, select Properties, check "I know this computer or device" and it'll be removed from the danger list. Anything that's clearly a part of the infrastructure, like the PC you're working on or your router will be flagged as green, but everything else will be marked as red: a potential intruder. The program requires no installation (the Windows build, anyway) - just run it, and SoftPerfect Wifi Guard will quickly scan your network and display any devices it finds. SoftPerfect Wifi Guard is a simple tool which makes it easy to detect intruders on your local network.
