Heh He!!
If you belive that your a Daily Mail reader!!!
- Seriously though, there is no such thing as a system that the authorities cannot crack. Bear in mind who Invented a) The Net and

e-Encrption.
Echelon is here, its reality and we all have to get used to the fact. There is no such thing as a private conversation accross wires..
We lost all semblance of "Net Freedom" - of which I was an advocate for 11 years, until September 11th we were winning the ground.
One of the biggest casulalties of the attacks, was Net Freedom.
There are tools out there (commercially) which allow all traffic in packets to be decrpted and viewed en-route (like a phone tap) and this does not require: a) a court order

probable cause, etc, etc.
I'm in no way exagerating this, I work in IT Security for a UK Government Contractor.
So always be aware of the fact, that you ARE being listened to.
PGP is breakable - its difficult but not impossible.
512k encryption is around, but the US military created the source code. If you think they would not have a backdoor...... your crazy.
nuff said..