antivirus

Hi all. I need your suggestion. I have a Sony Vaio laptop and I want to know that is it mandate to install an antivirus software? I do net surfing on it and I am concerned that should I go for paid software or the free one. What are the best paid and free antivirus software?

These are 8 myths that are hard to die which are related to internet and computers. 1. Macs are completely secure from viruses The world's first computer viruses appeared on a Mac, believe it or not. The year was 1982 and the program was called Cloner. But ever since then, Apple computers...