SophosLabs™, Sophos's global
network of virus, spyware and spam analysis centers, issued an
update at 14:43 GMT on Tuesday 21 February to detect the
OSX/Inqtana-B worm for Mac OS X.
Unfortunately, this update was flawed, and Mac OS X users may
have been mistakenly warned by Sophos Anti-Virus for Mac OS X that
some files on their computers were infected with the worm.
SophosLabs quickly discovered the problem, and issued a revised update less than
two hours later at 16:40 GMT, Tuesday 21 February. Customers who
take advantage of Sophos's automated updating facility will have
been automatically updated from this time, and will no longer
experience the false positive.
Additionally, an email was sent to customers who are subscribed
to Sophos's email notification
list informing them that the IDE had been updated to correct
the detection issue.
Sophos apologizes for any inconvenience that this problem has
caused. Measures have been put in place to ensure that the problem
does not occur again. Any customers who require further guidance
are recommended to contact Sophos Technical
Sophos would like to remind customers that the OSX/Inqtana-B
worm is not in-the-wild, and is unlikely to be encountered.