Most people think that if they install an antivirus program from some company with a BIG well-known name, they’re protected. Unfortunately, this isn’t always true.
The best way to get infected is to open up every email attachment from everyone you don’t know and clicking on these attachments to execute them. If you never open up an attachment from somebody you don’t know, you can still get infected just from your day to day web surfing activities.
Usually, people don’t call me about their computers until they are so clogged up with malware that they will barely boot, or they can’t get on the internet any more. PLEASE DON’T WAIT THIS LONG!!
Usually you can keep your own computer in good shape just by doing a weekly scan with Malwarebytes’ anti-malware. It’s a free program ( http://www.malwarebytes.org/mbam.php ) and it’s very effective at removing those nasty’s.
If you don’t do it, your computer could (without your knowledge) be enlisted in a vast Zombie Computer Army that could go out and ruin the internet for everybody.
Malwarebytes is a great program (It’s even better if you get the version you pay for) but it doesn’t protect against viruses. Viruses are a little harder to catch from just web surfing. I usually use an active anti-virus program to detect and prevent virus infestation. Panda Cloud anti-virus is a good one. It has a free version too. You can get it on the CNET site http://download.cnet.com/Panda-Cloud-Antivirus-Free-Edition/3000-2239_4-10914099.html
If you want even better protection, you can buy these programs. This would make the programmers happy too!