Facebook: Our big clients are guilty of this. I guess they must get bored at work and log into Facebook as they have nothing else to do. The problem is some of the Facebook plugins are malicious so they end up infecting their computers. This got so bad, we blocked all social networking sites for one of our big clients.

Fake Video Codecs: People just keep falling for this one. The main culprit is porn sites but our clients swear that they never visit them. Their internet history says different.

BitTorrent: It is mostly kids and teens that do this. While fake MP3’s are a big cause of infections, the biggest source is fake computer game cracks.

Fake Updates: A client visits a web site and is told that they need to download the latest version of Flash to view the site. They accept and you can guess what happens next.

Browser Hijackers. Yes, there are people who believe the fake security pop ups that appear onscreen when their browser has been hijacked. The client downloads the fake program and even worse, pay’s for it.

Those are the main ways people get infected with malicious software, at least where I live. Please learn from their mistakes.