Is my roommate trying to hack into my computer?
For example, I know his local IP Address to be 192.168.0.101 and ZoneAlarm keeps reporting that the Source IP 192.168.0.101 is trying to send something to my computer.
Also, if he has already installed a keylogger on my computer, are there any effective scanners that can get rid of a keylogger? or is my only option is to reformat my harddisk and reinstall Windows? (I generally leave the room unlock when I take a shower. Plus, my roommates had access to my room key -- because the landlady was on a vacation when I moved it so she left my room key with them.) My computer has been acting strangely since I moved into my current place. And for a weird reason, my 2 roommates seem to know (too much) about my private personal email conversations.
Lastly, I have never used Linux before, but if I switch to Ubuntu, will it be harder for people to hack into my computer?
Thanks in advance.