More details:
https://nakedsecurity.sophos.com/2016/03/08/ransomware-arrives-on-the-mac-osxkeranger-a-what-you-need-to-know/
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On 3/7/16, 9:48 AM, Caleb Clauset wrote:
> It's news in that it's the first observed and functioning Mac-specific
> malware, but it's much ado about nothing _unless_ you downloaded and
> installed the infected version of the Transmission BitTorrent client
> within the last 7 days _and_ had previously a) disabled PowerNap
> (/System Preferences → Energy Saver → Enable Power Nap)/; or
> b) disabled GateKeeper (/System Preferences → Security & Privacy →
> General → Allow apps downloaded from/ *anywhere*); or c) launched
> Transmission and left it open because you were actively torrenting. In
> other words, the potential number of people affected is quite small
> and even if you got your hands on the infected version unless you
> match the above criteria (disabled PowerNap, disabled GateKeeper, or
> were actively torrenting before Apple revoked the certificate) you
> wouldn't get infected. But, it's news because it concerns Apple and
> the media… well, they do what they do.
>
> ___________________________________________
> RICK GORDON
> EMERALD VALLEY GRAPHICS AND CONSULTING
> ___________________________________________
> WWW:
http://www.shelterpub.com