Variations of the Flashback trojan have reportedly infected more than half a million Macs around the globe, according to Russian antivirus company, Dr. Web, as reported by “Ars Technica” (

Dr. Web claims 550,000 to 600,000 Macs are infected Macs. The company says 57% of the infected Macs are located in the US and 20 percent are in Canada.