https://lenta.ru/news/2020/01/14/burisma/
The GRU operation against Burisma, linked to Joe Biden’s son Hunter, again entangles Moscow in domestic U.S. politics.
The timing and scale of the attacks suggest the Russians may be looking for the same kind of damaging information on Joe Biden that President Trump wanted from Ukraine, security experts say.
http://www.ng.ru/politics/2018-05-03/100_politimigr.html