can you recommend any (opensource or trusted) android apps to check who’s using your wifi? or any cmd prompt code to search on the desktop?
a small doubt: can anyone hack your computer through WiFi? If so, How to prevent that (or) How to take measures after you think you been hacked?
Couldn’t you just monitor your WiFi at the router level?
Anyway you can use nmap to scan your entire network to find all connected devices. Its not foolproof but its a start