Today, how effective is Ccleaner in its most recent version, when used for wiping free space or an entire disk, against forensic techniques? I have read both opinions: YES(if used properly) AND NOT. But these opiniones were based on old ccleaner versions. What´s the answer today, and what´s the 'proper way of using'?
With time, money and effort as no factor for the analyst, there is only one way to beat forensic recovery.
If 'ccleaneruser_' doesn't return, I blame the NSA.
Blow torch, sledgehammer, etc.
Absolutely not. CCleaner's main purpose is to help free up space and allow your system to work a little more efficiently.
If you need to forensically clean a disk and do it with commercial software then come D-day you are going to be in for a nasty surprise.
Sure, they won't get everything back, and it'll be in bits and pieces, but there'll be enough data to put your arse in a sling.
There are techniques and tools, which I won't discuss, that would surprise even the most ardent techheads.