Normally I'm the one complaining about typical HN comments. However given the blog post was titled "Game of Thrones leak and watermark: a stupid tracking system" I felt that leading with "This is a stupid blog post" to be a fair and amusing twist.
“Sadly, it seems the leaked four episodes of the upcoming season of Game of Thrones originated from within a group approved by HBO to receive them,” the spokesperson said. “We’re actively assessing how this breach occurred.” http://www.buzzfeed.com/jaimieetkin/game-of-thrones-season-5...
They've at least narrowed the leak down to be from inside HBO. They may not have it down to an individual just yet. Their internal process may need some work.