As I’m no longer regularly working in the security industry, this page is no longer being maintained. It’s left up here for historical reasons only.
David Harley, 15th April 2020
In order to make change tracking easier, I’ve broken this page into the sub-pages below.
Links (Updated 1st March 2011)
Papers (Updated December 2011)
Mac Malware in Security Books (Updated 20th February 2011)
David Harley CITP FBCS CISSP
Mac Virus Administrator
Small Blue-Green World
AVIEN Chief Operations Officer
Mac Virus 
0s 10.6.8 screenlock bug? mouse and keyboard are locking, is there a known bug and remediation?
By: janis on October 10, 2013
at 14:46
Hi, Janis. I’m not aware of a specific problem that corresponds to those symptoms, I’m afraid.
By: David Harley on October 10, 2013
at 18:32
So, can you recommend an AV solution for the new OS 10.9.1 please?
By: Andrew Garcarz on February 11, 2014
at 09:34
I haven’t done any public testing on AV products for quite a while. Since a large part of my income derives from a security vendor with a Mac product, I wouldn’t be comfortable publishing anything like that at present.
By: David Harley on February 11, 2014
at 09:47
Thats fine thank you for your candour. I’m going to try Avast and see what its like.
By: Andrew Garcarz on February 11, 2014
at 10:00
You could certainly do worse. Sophos has a good free product, too, if free is the issue. 🙂
By: David Harley on February 11, 2014
at 10:30
Free isn’t the issue, I just don’t want to pay out until I know what is reliable and what is not so.
By: Andrew Garcarz on February 11, 2014
at 11:16
In that case, I’d look for evaluation copies of suites rather than free AV, personally.
By: David Harley on February 12, 2014
at 09:59
My Iphone 6 has been cloned any help?
By: Blank on February 17, 2015
at 03:27
Outside my remit, I’m afraid. You might do better with a user/help forum like MacRumors or iPhoneForum.
By: David Harley on February 17, 2015
at 09:59
came home to find a guest user on my Mac Book Pro…what could have happened
By: Aaron Arnott on July 13, 2016
at 06:03
Have you just enabled Find My Mac?
By: David Harley on July 13, 2016
at 06:38