Versions

12,8,957,0	17.65%
12,8,839,0	7.35%
12,1,317,0	1.47%
12,1,317,0	1.47%
12,1,231,0	5.88%
12,0,610,0	1.47%
11,6,505,0	14.71%
11,6,434,0	26.47%
11,6,434,0	16.18%
11,6,334,0	1.47%
11,6,334,0	1.47%
11,0,669,0	1.47%
11,0,669,0	2.94%

There are 13 versions of McUpdShm.dll in the wild, the latest version being 12,8,957,0. The average file size is about 150.11 KB. The file is a digitally signed and issued to McAfee by VeriSign. The programs Yahoo! Toolbar, Yahoo! Install Manager and Run_Dregol have been observed as installing specific variations of McUpdShm.dll.

McAfee Update Shim Layer for McAfee SecurityCenter is a security solution that allows users to monitor their computer's security status and to know instantly whether their computer's virus, spyware, e-mail, and firewall protection services are up-to-date. Most McAfee SecurityCenter builds offer trial subscriptions to McAfee’s security software. The program generates security alerts which notify users about emergency virus outbreaks and other important security related messages.