But why does Snowden suspect the Russians? If you ask him, the breach may have been "more diplomacy than intelligence." He theorizes that this was an attempt to "influence the calculus" of US officials wondering just how harshly they respond to the reportedly Russia-based DNC hacks. Chastise Russia too much and the country could promptly show that the US has been equally sneaky. Putin and crew could show that the NSA hacked American allies, for instance.

This doesn't definitively link the Russians to the incident. The Shadow Brokers say they will "auction the best files," so they might have a financial incentive. The timing is suspicious, however, and it's certainly plausible that Russia could be trying to control its reputation right as many are accusing it of interfering with American politics.