
Originally Posted by
Peopleunit
I think it goes without saying that you probably peeved him when you changed the PW on your wireless, even more so when you failed to let him know when he came by for a visit. Just be up front with him, that you no longer wish to give him access, if for no other reason that it could very well be against the terms of use agreement with your ISP.
At the same time, it could be wise to install anti-virus, anti-spyware and such and run some thorough scans for any such malware on all your PC's.
I like the idea of implementing MAC address filtering, I'll have to remember that. Presently all my PC's are hardwired to my router and the wireless is turned off completely. I only turn it on when my brother who owns a laptop stops by for a visit...
For proof positive, you might re-enable his access and then bait him with specific info posted via email, and then if he takes the bait, get him to implicate himself with a trail that can be traced, by communicating with him via email or cell phone, where he discloses some otherwise unknown references to info that you baited him with. I hope I made sense in describing this.
With traceable proof, then its time to get the police involved... in regard to electronic spying, etc. Speak with a detective, someone with the FBI or the FCC if necessary. If the guy is a stalker or does turn out to be a real weirdo (more than just showing an interest), for your own safety get the authorities involved. At the same time, one or two instances of pecularity could be just that, a peculiar coincidence.
Bait him with some info that would clearly implicate him, send a few fictitious emails that he'd be likely to comment or act on... something like you've found a new job so you'll be moving out and have an appointment to go look at a new apartment tomorrow or this weekend, or you're planning on going somewhere nearby, like your parents house... then see if he follows you. If he follows you, get the cops on the phone and they'll have probable cause to bring him in for a few questions.
Heck, no reason to wait. If you're already convinced he's stalking or hacking your network, give the police his name and ask them to run a background check on the guy, now.
I sent an email to a girl on a singles website a while back where it was pretty clear that she worked for the FBI or something similar. Lo and behold, within hours it looked like there was some strange stuff going on with my PC, etc. Maybe this guy works for the CIA and he's privy to infiltrating your ISP, etc. Bastards...