If you don't install antivirus software, you risk having your PC taken over by ransomware or losing personal data to a sneaky Trojan. But which antivirus should you use? We'll help you decide.
We call these utilities "antivirus," but in fact they protect against a huge range of malicious programs, including ransomware, spyware, adware, keyloggers, rootkits, Trojans, and more. Lucky for us, there's also a huge range of products designed to fight these nasties. PCMag has reviewed over 30 different commercial antivirus utilities, and that's not even counting free antivirus tools. Ten of the for-pay versions proved effective enough to earn an excellent four stars or better. Another eleven earned at least three stars. for kno more go here
free antivirus of 2015
learn more about antivirus
wikipedia