He was in charge of prosecutor's supervision over observance of laws by the agencies of the Ministry of Interior, the Security Service of Ukraine (SBU), tax police and special units combating organized crime and corruption.
[9] Since his appointment to office, Viktor Pshonka has laid emphasis in his activity on bringing Ukrainian prosecution service in line with European standards.
Speaking on the Ukrainian TV channel Inter four days after his appointment, Pshonka called himself "a member of President Viktor Yanukovych's team".
[10] In this regard, V. Pshonka takes active part in consultations and discussions on the issues of improving of the work of prosecution service with experts and representatives of European and international organizations, in particular, the United Nations, the Council of Europe, the Venice Commission, etc.,[11][12] as well as exchange of experience with law enforcement authorities of other states.
[16] On 3 March 2012, another innovation during Pshonka's tenure was establishment of the Dnipro Ecological Prosecutor's Office, the main task of which is to oversee compliance with environmental laws in respect of drainage basin of the Dnieper River within the territory of Ukraine.
[17] In 2012, Pshonka as the Prosecutor General of Ukraine began investigating Burisma Holdings owner, Mykola Zlochevsky, over allegations of money laundering, tax evasion, and corruption during 2010-2012.
[20] Similarly, on 22 February 2014, Pshonka left the VIP terminal at Donetsk airport for Russia by having his security detachment occupy the Ukraine border guards.
[36] Ihor Oleksandrovych Aleksandrov who was an investigative reporter and presenter for the independent television station TOR TV (Ukrainian: «ТОР») in Sloviansk[b] was murdered in 2001 while producing a program for the series "Bez Retushi" (Without Touching Up) (Ukrainian: Без ретуші) which was exposing links between politicians, law enforcement, and organized crime in Kramatorsk;[37][38][39][40][41] Pshonka was one of two men Aleksandrov had identified as godfathering the Kramatorsk underworld.
[38][41] A homeless man was later charged but acquitted in the case, dying of 'mysterious circumstances' soon after; the same fate that befell the two witnesses and investigating police officer.
(Russian: Viktor Shokin: "Я вам больше скажу: пропали не только уголовные дела, но секретные материалы – секретное делопроизводство.
[23][46] On 15 April 2015, Nayyem recovered missing GPU files about Yulia Tymoshenko in Pechersk's regional department of the Ministry of Internal Affairs, Kyiv.
[49][50] After his removal as General Prosecutor of Ukraine media reported in late February 2014 that photos of Pshonka's mansion were "astonishing by their luxury".
[20][53] The last time Pshonka appeared in public was during a joint press conference with former President Viktor Yanukovych and former Ukrainian Interior Minister Vitaliy Zakharchenko on 13 April 2014 in the Russian city of Rostov-on-Don.
On July 26, 2023, the European General Court annulled the decision to impose sanctions, considering that it was made on the basis of insufficiently solid facts.