Not long ago, the head one of our nation’s domestic agencies received an e-mail purporting to be from his bank. It looked perfectly legitimate, and asked him to verify some information. He started to follow the instructions, but then realized this might not be such a good idea.

It turned out that he was just a few clicks away from falling into a classic Internet “phishing” scam—“phishing” with a “P-H.” This is someone who spends a good deal of his professional life warning others about the perils of cyber crime. Yet he barely caught himself in time.

He definitely should have known better. I can say this with certainty, because it was me.