Privacy is a fundamental human need.

Hardware is easy to protect: lock it in a room, chain it to a desk, or buy a spare. Information poses more of a problem. It can exist in more than one place; be transported halfway across the planet in seconds; and be stolen without your knowledge.

But in this country, while you have to be competent to pull off a terrorist attack, you don't have to be competent to cause terror. All you need to do is start plotting an attack and - regardless of whether or not you have a viable plan, weapons or even the faintest clue - the media will aid you in terrorizing the entire population.

ID can be hijacked, and cards can be faked. All of the 9/11 terrorists had fake IDs, yet they still got on the planes. If the British national ID card can't be faked, it will be the first on the planet.

There are two types of encryption: one that will prevent your sister from reading your diary and one that will prevent your government.

The mantra of any good security engineer is: "Security is a not a product, but a process." It's more than designing strong cryptography into a system; it's designing the entire system such that all security measures, including cryptography, work together.

Why is it that we all - myself included - believe these stories? Why are we so quick to assume that the TSA is a bunch of jack-booted thugs, officious and arbitrary and drunk with power? It's because everything seems so arbitrary, because there's no accountability or transparency in the DHS.