2016 United States election leaks

The 2016 United States election leaks were a series of publications of more than 150,000 stolen emails and other files during the U.S. presidential election campaigns released by Guccifer 2.0, DCLeaks and WikiLeaks. Computer hackers allegedly affiliated with the Russian military intelligence service (GRU) infiltrated information systems of the Democratic National Committee (DNC), the Democratic Congressional Campaign Committee (DCCC), and Clinton campaign officials, notably chairman John Podesta, and leaked some of the stolen materials. Emails from Guccifer 2.0 to journalists suggest a link to DCLeaks, and messages WikiLeaks exchanged with Guccifer 2.0 and DCLeaks suggest both submitted emails to WikiLeaks.

Guccifer 2.0 released Democrats' files related to their House of Representatives candidates in Florida, Pennsylvania, New Hampshire, Ohio, Illinois, New Mexico and North Carolina, and documents stolen from John Podesta's mailbox and House Minority Leader Nancy Pelosi's hacked personal computer. Guccifer 2.0 also gave reporters a password to access private files on DCLeaks and released information about Republican donors and opposition research about Sarah Palin and Donald Trump. DCLeaks released emails from Republican targets including the 2016 campaign staff of Arizona Senator John McCain, and South Carolina Senator Lindsey Graham. DCLeaks also released information about more than 200 Democratic lawmakers, the emails of the former NATO supreme commander in Europe and files from the George Soros' Open Society Foundation.

The emails and documents leaked from the Democratic Party's national committee (DNC) resulted in allegations that the DNC was biased against Bernie Sanders' presidential campaign. The revelations prompted the resignation of DNC chair Debbie Wasserman Schultz before the 2016 Democratic National Convention. These releases caused significant harm to the Clinton campaign, and have been cited as a potential contributing factor to her loss in the general election against Donald Trump. Podesta's emails shed light on the inner workings of the Clinton campaign and suggested that CNN commentator Donna Brazile had shared audience questions with the Clinton campaign in advance of town hall meetings. The emails also contained excerpts from three Clinton speeches to Goldman Sachs and an internal campaign document cataloging potentially problematic portions of over 50 paid speeches.

On July 13, 2018, an indictment was made against 12 Russian GRU military officers; it alleged that Guccifer 2.0 and DCLeaks were part of a Russian military operation to interfere in the 2016 U.S. presidential election. The indictment also alleged that the Russian operation provided the emails to WikiLeaks. Wikileaks said its source was not the Russian government or a state party and the Russian government said it had no involvement.