Security firm F-Secure has spotted 58 separate threats targeting OS X in the past nine months.
Of the 58 threats spotted in total, 15 were classified as "backdoor" threats, seven were Trojans, 29 were Trojan downloaders and the other seven were classified simply as "rogue."
"Mac malware has not scaled continuously due to market share, but rather, is more the result of opportunist 'bubble economies' that have produced new threats in fits and starts. We expect more of the same for 2012," F-Secure said.
The company notes that while the number of threats is minute when compared to the number seen targeting the Windows platform, it is a significant increase on previous years.
See also "Mac Defender Malware: A Survival Guide for OS X Users.").
This story, "Mac Malware Threats Increase" was originally published by Macworld U.K..