Stross on NSA network sabotage

"The same security holes that the NSA relied on to gain access to your (or Osama bin Laden's) email allowed gangsters to steal passwords and login credentials and credit card numbers. And ultimately these same baked-in security holes allowed Edward Snowden to rampage through their systems.

The moral of the story is clear: be cautious about poisoning the banquet you serve your guests, lest you end up accidentally ingesting it."