I was in yahoo chat the other day and i got hacked, i know it was a hck because the intruder told me what he was about to do and even though i have Zonealarm and blackice defender running he killed all instances of IE.
Well i just downloaded a port scanner to check how vulnerable my connection is, and the only responding port was port 139 nbsession, i guess this is netbios, is this a major vulnerability?