In what appears to be a first for Apple, ransomware has started to make its way onto Apple devices.
Transmissionbt.com is warning users that version 2.90 of the popular Mac BitTorrent client downloaded from their site, not from the app update system, may have been infected with malware. The message reads:
Everyone running 2.90 on OS X should immediately upgrade to 2.91 or delete their copy of 2.90, as they may have downloaded a malware-infected file.
Using “Activity Monitor” preinstalled in OS X, check whether any process named “kernel_service” is running. If so, double check the process, choose the “Open Files and Ports” and check whether there is a file name like “/Users//Library/kernel_service”. If so, the process is KeRanger’s main process. We suggest terminating it with “Quit -> Force Quit”
Reuters reports that the infected download contained the first "Ransomware" found on the Mac platform. Ransomware is a type of malware that encrypts a user's hard drive and demands payment in order to unencrypt it. This type of attack has been around on PC for a while, this is the first time it has been seen on the Mac.
Apparently Apple is aware of the issue and has already revoked "a digital certificate from a legitimate Apple developer that enabled the rogue software to install on Macs."
The Ransomware doesn't start encrypting data for 3 days! So now's a good time to back up all those files!