There are programs out that are not only keystroke loggers,but are immune to antivirus programs and will hide in the back ground for ever untill dissabled,,,The person wanting to gain access to you machine can do it remotely just by sending you an e-mail and poof,,they have it all,,,,,all your password,banking info,all the sites you visit etc.If this was to happen,changing passwords will not do anything as the hacker will get them all e-mailed to him/her as you do it.
Alot of P.I's use these programs to catch cheating spouses now.Tiss true,I've seen them work
