PC World reports that a spate of scareware apps that trick users into buying useless hard disk repair tools appears to be part of a concerted campaign to push fake "defrag" software

ding to a GFI-Sunbelt Security blog, a new type of bogus disk software has suddenly become very common on the back of this, with a clutch of convincing examples appearing in recent weeks.

Users encountering new examples HDDRepair, HDDRescue and HDDPlus should ignore them. They are bogus applications that claim to defragment a user's hard disk even though such a requirement is barely needed given that Windows does a lot of this work behind the scenes anyway.

  Internet Hit by Wave of Fake PC 'defrag' Tools