Have you encountered a pop up window or any webpage that suddenly appear while your doing your online works.?
Dont take the risk! Because you can be a victim by SPAM. When a certain website was reached by a hacker, this is the common thing to happen.
If they were asking you to enter your user name and password, Please be aware that this can be a spam created by hackers. It can also be a rouge software or those software that pretends to be a software application but the truth is they are actually virus which may harm your computer.
I was once became a victim of these hackers, someone is using my friendster email account and try to send porn videos to my friends. So embarrassing