Russians steal research on Trump in hack of US Democratic Party

Cyber breach: Two separate groups entered the DNC's system, reading e-mail and chat communications for nearly a year before being found out.

WASHINGTON: Hackers believed to be working for the Russian government broke into the Democratic National Committee's computer network, spied on internal communications and accessed research on presumptive Republican presidential nominee Donald Trump, the committee and security experts said.

Two separate groups entered the DNC's system, and one read e-mail and chat communications for nearly a year before being detected, according to the committee and CrowdStrike, the cyber firm that helped clean up the breach.