A summary of why encryption wouldn't have prevented General Petraeus from getting caught. Like the quote: "If you think cryptography is the solution to your problem, you either don't understand cryptography or you don't understand your problem."
This article on how the CIA is using crowdsourcing to make intelligence more accurate is particularly well written because if its inclusion of a quick attention draw with the reference to the new James Bond movie, good historical background, an inviting writing style that includes rhetorical questions, and interviews with experts that add to the legitimacy of the article.