Whether your PC is 3 years or 3 days old, it faces the same, sometimes scary security issues. Viruses want to attack your system the moment it goes online, spyware is piggybacking with your mail and trying to slide in along with online ads, Trojans lay in wait at every turn and Phish—perhaps the sneakiest attack of all—smile at you while trying to steal your identity. [more]
http://www.pcmag.com/article2/0,1895,1838690,00.asp