“We’re a human-run agency operating in a complex environment with a number of different regulatory regimes, so at times we find ourselves on the wrong side of the line,” a senior NSA official said in an interview, speaking with White House permission on the condition of anonymity. “You can look at it as a percentage of our total activity that occurs each day,” he said. “You look at a number in absolute terms that looks big, and when you look at it in relative terms, it looks a little different.”
The causes and severity of NSA infractions vary widely. One in 10 incidents is attributed to a typographical error in which an analyst enters an incorrect query and retrieves data about U.S phone calls or e-mails.
What could go wrong?