Security specialist Kaspersky is warning of the increased vulnerability of Mac systems to malware, reports “betanews” (

The firm says there are now more than 63 million OS X users in the world and that since 2010 the number of antivirus signatures for Macs has increased more than six times. According to Kaspersky the top five threats include becoming part of a zombie network via a compromised WordPress site, fake antivirus products like MacDefender and MacGuard, exploitation of software vulnerabilities, targeted attacks and network infections.