[PeterFinn]

You can learn a lot more from a hard drive than what's in the current set of files. There are ways of getting to the deleted stuff, even if it's been over-written.

Which is why I use "Windows Washer" from Webroot with the "bleach" setting which overwrites deleted files ten times - not even the NSA is recovering from that.

[rednesss]

Or if you are nefarious enough, just store the data on a PGP encrypted drive. As far as I know, the feds have never cracked Kevin Mitnick’s laptop.