A bombshell story published in the Washington Post this week alleged that the NSA had enlisted nine tech giants, including Microsoft, Google, Facebook, and Apple, in a massive program of online spying. Now the story is unraveling, and the Post has quietly changed key details. What went wrong? […] The biggest problem was that the Post took a leaked PowerPoint presentation from a single anonymous source and leaped to conclusions without supporting evidence. […] Normally, an investigative piece like this would be reported thoroughly before being published. Instead, it looks like the Post rushed to publish, perhaps fearing that the slide deck had been leaked to another publication that would beat them to the punch. […] That rush to publication set off the Internet echo chamber and the cable news networks at a full-throated roar. The story and its key, now apparently discredited arguments have been spread far and wide.