I have gotten attacked by 3 fake antiviruses. The first, green AV. Second, AntiVirusXP. The third, Windows web security. I was surfing the web looking for sheet music on google. Suddenly, a window pops up saying "Your comp. is being attacked!". I've seen people with similar messages, saying it's at risk, but not attacked. I never knew about "Windows fake AV"'s at the time so I clicked scan. Now, this wasn't like any other malicious, misleading software because it doesn't ask to buy anything from them. When finished with it's scan (Which took no more than 3 seconds!!) it said I had 20 viruses, such as win.32.trojan.dropper or something similar which were real. It prompts you to remove these and again are prompted to download something like system_checkers_and random chars. I clicked run, believing it was from windows. As soon as I did, my Avast antivirus (which is not a big brand so it wasn't disabled) shouted "WARNING: THREAT DETECTED!!!" ,and presented this and the name of the file I just downloaded, in a window with a red background. It couldn't attach itself, luckily, I didn't pay attention to why.
Did anyone have my scary experience? I checked to see if it was still there with malwarebytes after my Avast got rid of it , and sure enough, it still was! Malwarebytes got rid of it, but how can I make sure it is gone for good and prevent it from happening again??
This is on Windows XP... If it helps...