So I'm currently living in a dorm at University at the moment. At the dorm, to access the internet, I need to connect up to the University/Dorm LAN. Now on my computer I'm running Windows Vista with Kaspersky Internet Security, plus several anti virus programs (Spybot, Windows Defender).
What is happening, is that people think that its funny to gain access to my computer (remotely over the LAN), and go around setting my background, homepage etc to various "other" sites.
My question is: Firstly, how are they doing this? I thought my computer was fairly secure but I guess not. I'm pretty sure they must be using some sort of Remote Administration program to gain access, but I would have thought my firewall (Kaspersky) would have blocked this. Secondly, and more importantly, how would I go about stopping this? Are there any programs that I could use to block access to them with?
If anyone has any ideas/advice it would be much appreciated.