[3][a] The Derkach family maintains very close relationships with Oleg Deripaska, Mikhail Fridman's Moscow-based Alfa Group and Petr Aven's Alfa-Bank.

[5] From 1957 to 1972, Derkach worked at the Soviet Rocket giant Yuzhmash (Ukrainian: ПО "Пiвденмаш") in Dnipropetrovsk (today Dnipro).

[10] From March 1972 to December 1992 he worked for the Ukrainian SSR's branch of the KGB (in 1992 became Security Service of Ukraine) in Dnipropetrovsk Oblast.

[17] He was a member of the 4th Ukrainian Verkhovna Rada (parliament), representing Ukraine's 36th electoral district in Dnipropetrovsk Oblast from 14 May 2002 until 25 May 2006.

[18] His son, Andrii Derkach, who is also a Russian intelligence operative that graduated from the KGB's Dzerzhinsky Higher School now known as the FSB Academy, was a close ally to Rudy Giuliani during 2019 and 2020 for support of Donald Trump's Presidential campaign.