Originally Posted by anexsia

http://www.digitaljournal.com/article/322338

"An unpatched Java vulnerability in Apple operating systems is the gateway to the infection. One of the significant problems is that no user action needs to occur for this latest version of the trojan, dubbed Flashback.K, to infect. Users can get infected by simply visiting a website on this go around, reports MacWorld."

"In May 2011, the first construction kit for Mac OS X trojans emerged in the form of a scareware called MacDefender. This malware, which resembled the type of scareware that has plagued Windows users for years, rapidly spread through the computers of Mac users caught off-guard. Since then several different types of malware aimed at Macs have emerged."