So I'm browsing the internet today, and I'm thinking damn is this thing slow. My brother isn't home, so his computer isn't on, my parents' computer isn't on, and I have zero network activity from my computer at the time, so I'm curious as to why the DSL modem is going nuts. I logged into my router to find out some jack*** is freeloading off my DSL! It showed all the users currently logged in, and I have specific names for all the computers in my house, but there's some computer with a random name of letters and numbers listed, and I know it's not one of mine. I never set the security on my wireless access point because it made networking across the wireless just crawl, so it's my own fault, but that just annoyed the hell out of me. 
My brother's computer is the only one on the wireless because I haven't felt like cutting up the drywall and pulling cable through the blizzard of blown insulation in my attic, but apparently one of my neighbors decided they'd use my DSL for free since I never turned on any encryption. I set the wireless to allow only my brother's computer to authenticate from his MAC address, but do you guys think this is enough, or should I turn on the WEP encryption, and just make my brother suffer through painfully slow networking?
We used to do that in my computer class. The teacher couldn't figure out who was printing stuff from online.
