If you think technology can solve your security problems, then you don't understand the problems and you don't understand the technology.

It is poor civic hygiene to install technologies that could someday facilitate a police state.

The whole notion of passwords is based on an oxymoron. The idea is to have a random string that is easy to remember. Unfortunately, if it's easy to remember, it's something nonrandom like 'Susan.' And if it's random, like 'r7U2*Qnp,' then it's not easy to remember.

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.

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.

I tell people: if it's in the news, don't worry about it, because by definition, news is something that almost never happens.

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.