A colleague once told me that the world was full of bad security systems designed by people who read Applied Cryptography

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.

Surveillance is the business model of the Internet.

Liberty requires security without intrusion, security plus privacy.

Despite fearful rhetoric to the contrary, terrorism is not a transcendent threat. A terrorist attack cannot possibly destroy our country's way of life; it's only our reaction to that attack that can do that kind of damage.

It is sort of interesting that in our society this days we are very quick to apply the term 'war' to places where thare are no actual wars, and loath to apply the term 'war' when we are actually fighting wars.

Only amateurs attack machines; professionals target people.