US believes Russian hackers are behind Democratic National Committee leak

Growing consensus within Obama administration is that Russians infiltrated DNC but there is less certainty that Vladimir Putin's government is responsible

The emerging consensus within the Obama administration is that Russian hackers successfully infiltrated the data networks of the Democratic National Committee, the Guardian has learned, although there is less certainty that the Russian government is definitively responsible for the attack.

A senior administration official said indications in the code used to execute the data breach points to Russian culprits. That assessment matches the preliminary conclusions from a recent series of cybersecurity firms that have analyzed the hack.