On Jan. 27 2017, a few days after the inauguration of Donald Trump and 2 weeks after Trump had been briefed on the “Russian Hacking “ of the election by American Intelligence, this happened:
Per a New York Times article at the time, and reported by the USNaval Institute Report on Russian Interests, in March of 2017, which referred to the incident as a “treason sweep” , three persons were arrested and some executed by Putin. The Times referred to them as possible ”American assets”.
Sergei Makhalov, Deputy Director Center for Information Security.
Ruslan Stoyanov, researcher Russian Kaspersky Labs
Dimitry Dokuchayev, former hacker, recruited by the FSB.
Did these men provide us with the clues that have led to the detailed information we have on the hacking?
We don't know but whatever they did it cost them their lives . May they Rest In Peace and may whoever betrayed them get his just punishment.