Today I was updating Malwarebytes on a customer computer, and for a moment I thought I had a rogue version of Malwarebytes. That’s because the version number associated with their database definition file had a completely different naming structure.

But a quick visit to the MalwareByte’s Forum and I discovered that they had indeed changed how they identify and name their database version!

The old format for the database version was a 4 digit number, like: 8229
The new format is an 8 digit number, like: 9111122309

According to the forum post, the version number breaks down as 9yymmddvv, where
9 = indicates this is the new version format
yymmdd = the date of the veersion (111223 represents Year 2011, Month December, Day 23)
vv = the version update for that specific day (09 indicates this is the 9th update for Dec 23, 2011)