Apple. 10 Simple Tips for Boosting The Security Of Your Mac. At the moment, there are more than 100 million Mac OS X users around the world. The number has grown switfly during the past years we expect this growth to continue. Until recently, Mac OS X malware was a somehow limited category and included trojans such as the Mac OS X version of DNSChanger and more recently, fake anti-virus/scareware attacks for Mac OS X which boomed in 2011. Official Apple Store - Buy new iPad mini, iPad, iPhone 5, MacBook Pro, Mac mini and more - Apple Store (U.S.) iCloud.