Re: Define "security"
At the conceptual level, security *is* binary.
It's only when you try to achieve that in reality that it falls short.
It's a bit like trust. Conceptually that is also binary, you can either trust someone or you can't.
In reality it's a bit more vague and it depends on what you are trusting someone for. Trusting a friend to return your car after borrowing it is one thing, trusting them to manage your bank accounts is another.
So here we have GCHQ, a known abuser of trust, asking us to trust it again. In response I would like to quote a well known security maxim back at them..
'Trust, but verify'. Until we have a cast-iron method of verification that their powers are not being abused then there simply cannot be any trust. At least not from those with a modicum of security training.