The new Sophos Threat Report 2013 has a lot to say about Mac issues. In fact, while it notes an increasing take-up of Macs by corporates flagged by Forrester, it’s fairly restrained on the predictive side, which is fine by us. But it does include some pretty interesting data regarding programmatic links between MacDefender and its fake AV siblings, and OSX/Flashback, and a bit of snapshot prevalence data that bears closer inspection. (David plans to look more closely at it on one of his other blogs in the near future.)
Lots of other stuff worth looking at, of course, such as the content relating to Android, Java et al. While you can read much of it on the web site (and watch some videos I haven’t looked at yet), it’s worth downloading the PDF: it contains some data that isn’t shown on the web site.
On the other hand, if you want a quick summary, an article at Infosecurity Magazine packs a surprising amount of detail into a single blog article: Malware set to take a big bite out of Apple in 2013
I think the reference to Morlock is probably a typo for (OSX)Morcut (a.k.a. Crisis).