The collection of kompromat on politicians and those in positions of authority was long practiced by the former KGB. (blog.politics.ox.ac.uk)
However, Trump Jr. later had to amend the statement after it emerged that he took the meeting after he was offered kompromat on Clinton as part of «Russia and its government's support for Mr. Trump,» according to emails between himself and Rob Goldstone, the British music publicist who represented a Russian pop star who initially sought to arrange the meeting. (businessinsider.com)
It also says Page met senior Russian official Igor Diveykin to talk kompromat on Clinton, and met with Igor Sechin to discussion financial payoffs to Page and others via the privatization of the Russian company Rosneft. (vox.com)