If you continue browse the internet without some type of antivirus software, you're playing Russian roulette with your computer. Sooner or later a virus, spyware, malware, or worm will make itself at home on PC or laptop.
It's easy and inexpensive to protect your computer files and your identity. There are many different types of desktop security software programs available. But all are not created equal. Make sure you get a program that is proactive. One that detects a virus or spyware before it has a chance to infect your computer.
Just because an antivirus software is free, doesn't necessarily mean it's good. Some of these free programs are actually spyware. Also, some free spyware scans can actually place spyware on your computer and then inform you that you need to purchase their software to get rid of the virus. To be safe, purchase from a well known company, or do research before you purchase.