Since Bill Clinton’s presidency (beginning in 1992), Russia’s FSB’s Department K has been collating a file of ‘kompromat’ on Hillary Clinton. It includes many eavesdropped conversations, e.g., from bugged comments Clinton had made during trips to Russia. Examples are things she said that contradicted her current position on various issues.
The ‘kompromat’ file on Clinton was previously controlled exclusively by Kremlin spokesman Dmitriy Peskov, under explicit instruction of Vladimir Putin.
Comments/Corroboration of Steele Dossier
Published emails sent to Donald Trump Jr. on June 3–9, 2016 confirm that Russia provided, or at least attempted to provide to the Trump campaign “official documents and information that would incriminate Hillary and her dealings with Russia.” Source
Further, Trump campaign adviser George Papadopoulos confirmed that after he was officially named as a campaign policy adviser, a UK university professor that he knew had ties to senior levels of the Russian government told him that Russia held damaging information about Hillary Clinton, including thousands of emails. Source
Clinton having public policies that contradicted her private statements was a significant theme among Trump campaign attacks on her candidacy. This suggests that many of these attacks were sourced from the Russian kompromat file.