This article was sent to me, and I thought it might be of interest to 
the SMUGGERS.

Gilly



Two Mac trojan outbreaks were spotted in the past week leaving 
several people, including myself, to wonder if the tipping point for 
the Mac malware epidemic has arrived. Frankly, I don't know, but I 
tend not to think so. I do think, however, that Mac malware will now 
become endemic amongst the high-risk groups such as file-swappers.

This past week a trojan claiming to be the latest iWork release was 
spotted on file sharing networks. Shortly thereafter, a similar 
trojan was sighted that masquerading as a crack for Photoshop CS4. 
Both events are making some people question whether or not the Mac's 
long tenure as being a malware-free system is coming to a close and 
to face facts and install AV software.

The short answer is if you are a relatively well-behaved computer 
user, probably not. Mac malware is not endemic amongst the general 
population due to these events. The trojans of the past week is not 
self-propagating beyond the high-risk population, namely file 
swappers, and is relatively easy to find, analyze, and remediate. 
This is in stark contrast to PC users who have been hit with the 
Downadup/Conficker worm, which propagates via three orthogonal 
vectors and includes one remote exploit, and actively prevents you 
from visiting websites that contain remediation tools.

I do think the relative halcyon days of malware-free Macs are coming 
to an end. Anyone who is currently infected by the new malware will 
remain infected without direct human interaction due to the lack of 
any automatic mechanism for the identification and removal of 
malware. That means there is a non-zero population of Mac users who 
are now compromised and will remain compromised unless they either 
clean their machine or they buy a new system. Sounds familiar, right?

The question I want answered is whether or not the monetization rate 
of compromised Macs is sufficient for the malware authors to continue 
to pursue the platform. If not, these events will be a blip on the 
radar; otherwise, Mac owners better keep their Time Machine backups 
up to date.

Adam J. O'Donnell, Ph.D. is an R&D engineer who has focused on 
computer security since 2000. He currently is the Director of 
Emerging Technologies at Cloudmark, a messaging security company 
located in San Francisco. See his full profile and disclosure of his 
industry affiliations.

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