[oniTony]

Sure it's plausible. The suggested _secure_ way of wiping a harddrive is to override it with random data (since a typical delete simply drops an entry from a table, making data retrieval trivial (in the current context)).

What I don't understand is that in a context of a court (and this group of competent professionals), password disclosure _should_ be considered self-incrimination (although there was at least one case in the UK where a judge came up with some loophole reasoning around that). Disclosure of multiple passwords ("we didn't like what we found, do you have any other passwords?") would certainly be obtained under great duress.