How to defang the Fake Defragmenter

We are tracking the trails of this fake “System Defragmenter” software since its first appearance last October 2010, and have warned our customers in our earlier post about this trojan software. In this follow-up post, we give an update including a new variant worth noting for our customers. The fake system defragmenter family (FakeSysdef) is…

FakeSysdef: We can defragment that for you wholesale! / Diary of a scamware

Initially it was “System Defragmenter”, then “Scan Disk” and now it’s called “Check Disk”. While the name will most certainly change again, the main goal of Trojan:Win32/FakeSysdef will surely remain the same: to trick you into buying a piece of software that does nothing except scare you with fake warnings, critical “errors” and other “problems”….