Online security has become about as pathetic as airport security. Every 2 seconds I am asked to sign back into my email account. Um, can you see me Mr. Computer? It's still me, Margaret. Hence the system works more against us than for us. I mean there is a point of diminishing returns where you make the system so overprotective it's not really functional anymore.
Similarly, we must look really pathetic to Al Qaeda as they watch us on the news. Because SURELY they haven't thought of us thinking of body scanners once one of their men gets caught with a bomb in his underwear. I doubt they're thinking, "I'm going to do it the EXACT same way next time!"
And what do the CIA and FBI do then exactly? At what point are they going to realize, "Oooooooohhhhhhh, we want to stay one step AHEAD of the criminals! Oooohhh!"