> Is that a possibility over here ?

I don't see why not. There's no law that I know of that states that you
have to (attempt to) secure your network (or house or car for that
matter. Guns yes but not the rest).

Therefore it's pretty simple to introduce reasonable doubt and that's
all you need to do to defeat a prosecution which in a criminal case has
to be "beyond reasonable doubt".

The only problem is that Derby Constabularly for example are a year
behind evidence collection in kiddie porn alone, let alone anything
else. They have racks of computers awaiting forensic inspection so
you'd lose your PC for a long time if nothing else.

David.