History has taught us: never underestimate the amount of money, time, and effort someone will expend to thwart a security system. It's always better to assume the worst. Assume your adversaries are better than they are. Assume science and technology will soon be able to do things they cannot yet. Give yourself a margin for error. Give yourself more security than you need today. When the unexpected happens, you'll be glad you did.

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.

This is not the internet the world needs, or the internet its creators envisioned. We need to take it back. And by we, I mean the engineering community.

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

You can't defend. You can't prevent. The only thing you can do is detect and respond.

Digital files cannot be made uncopyable, any more than water can be made not wet.