Deep
Yes...they can from driving by. But it is more likely they "got" you from an email which was previewed or opened. There are numerous ways if someone wants to screw with you...they will and can. It is not always from someone piggybacking your account...it could be that they wrote a scam to propagate from a friend (someone you are familiar with via email)...let me ask, how many forwarded emails do you get & open from "friends or family members"?
I have informed my computer challenged family members that no forwarded emails will be opened...straight to the trash bin! When I told them how many fw emails I get from them, they had no idea and of course, were consumed with viruses & $hit to say the least.
If you want the best antivirus available, which includes a fantastic firewall (I have never had any problems and have cleaned up more computers using their service), go to eAcceleration (
www.stop-sign.com). Best of the best...these guys are on top of it and stay on top of it. For $60 bucks +/- you get a lifetime of service. I use it on all Windows-based computers. It does not support mac (which I use for my personal items)...but with mac, the attacks & issues are nil compaired to Windows (the bad guys focus most their efforts going after Windows and the American business sector...that is why you'll find most the issues coming from Muslum countries...they teach classes on how to attack & crush americans computer intellegence...no shit).