Terror plots

Security expert Bruce Schneier cautions against focusing too much on the terrorist threat du jour:

Sometimes it seems like the people in charge of homeland security spend too much time watching action movies. They defend against specific movie plots instead of against the broad threats of terrorism. ...

The problem with movie plot security is that it only works if we guess right. If we spend billions defending our subways, and the terrorists bomb a bus, we've wasted our money. To be sure, defending the subways makes commuting safer. But focusing on subways also has the effect of shifting attacks toward less-defended targets, and the result is that we're no safer overall.