[treprinum]

Destroyed? Where? In all places where they were stored? Or just in some of them? How can you tell? You still need to trust them they didn't copy them somewhere.

[theshrike79]

It's impossible to use any technology if you don't trust anyone.

Any piece of technology MAY have a backdoor or secondary function you don't know of and can't find out without breaking said device.

[treprinum]

That was the point of my response. Somewhere in the chain one must trust something without any proof.