If the FBI parks a van bristling with cameras outside your house, you are justified in closing your blinds.

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's frustrating; terrorism is rare and largely ineffectual, yet we regularly magnify the effects of both their successes and failures by terrorizing ourselves.

It's certainly easier to implement bad security and make it illegal for anyone to notice than it is to implement good security.

The question to ask when you look at security is not whether this makes us safer, but whether it's worth the trade-off.

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

People often represent the weakest link in the security chain and are chronically responsible for the failure of security systems.