Russian government hackers penetrated the computer network of the Democratic National Committee and gained access to the entire database of opposition research on GOP presidential candidate Donald Trump, according to committee officials and security experts who responded to the breach.
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The intrusion into the DNC was one of several targeting American political organizations. The networks of presidential candidates Hillary Clinton and Donald Trump were also targeted by Russian spies, as were the computers of some Republican political action committees, U.S. officials said. But details on those cases were not available.
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Some of the hackers had access to the DNC network for about a year, but all were expelled over the past weekend in a major computer cleanup campaign, the committee officials and experts said.

Why the f*** would Russia want to steal oppo research about Trump when it can read such in Politico and the Washington Post every day? Why start A YEAR AGO to hack something for Trump data? Who would have thought A YEAR AGO that Trump would be relevant? This was obvious nonsense. But some snakeoil salesmen convinced the Washington Post know-nothing reporter and the DNC that it all must be true: