A wise note written by Johannes Ulrich of SANS Institute outlines cyber security lessons from the recent russian spy arrests
. Clearly, information security tradecraft has not made its way into spy schools, at least not in Russia.
A lot of their failures trace back to a stealth search warrant a few years back that netted an encrypted drive. One of the agents fortunately noticed the slip of paper with an obscure set of letters and numbers: the written password. So it was a crackproof password, but they didn't take the trouble to memorize it.