Release the Dutch Evidence of the DNC Hack

For the first time in a year, significant new information has emerged linking the 2016 U.S. Democratic National Committee security breach to Russia. A newspaper in the Netherlands reports that U.S. authorities received evidence of the hack from the Dutch intelligence service, which had penetrated the Russian hackers. The report partly explains the U.S. intelligence community's certainty about what happened to the DNC and its reluctance to tell the public more. But it also raises new questions.

The story in the daily De Volkskrant is based on anonymous sources, as are almost all other substantial reports about Russian interference in the U.S. presidential election. But it provides enough exciting detail to be a major addition to what's publicly available. According to the paper, hackers from AIVD, the Dutch General Intelligence and Security Service, penetrated the network of the Russian hacker group known as Cozy Bear in the summer of 2014.