In business, Korban focused on primary privatization, securities trading, and the construction of large office and shopping centers in Kyiv and the Dnipro.

For this activity, together with his business partner Borys Filatov, he was persecuted by Deputy Prime Minister Oleksandr Vilkul, who influenced the regional authorities.

On November 21, 2015, two years after the beginning of the Euromaidan, Korban recalled: “...Filatov and I woke up the city of Dnipropetrovsk by broadcasting 5 Kanal (Petro Poroshenko's terrestrial television channel, which was the only one in Ukraine to broadcast live protests) on the advertising screens of our shopping malls as a symbol of truth and objectivity in the epicenter of the political influence of the Party of Regions”.

[16] It was on this day that the city council met in an extraordinary session to vote for an appeal to Yanukovych to use all legal methods to resolve the situation (a veiled call to disperse the Euromaidan).

[17] In early February 2014, Korban explained his motivation to openly oppose the Yanukovych regime: “We decided that we had to do something as citizens, to send a signal that not all businessmen are afraid… We want to live in Europe, not in an outpost of the Russian empire.” On Saturday, January 25, at about 5 p.m., the lights were turned off in the Passage, Europe and Library malls, escalators and elevators stopped; thousands of visitors were forced to leave the buildings in the dark.

[24] On January 27, when another Euromaidan rally took place on the European Square of Dnipropetrovsk, which was attended by about a hundred people, the Swan Lake ballet continued to be shown on the advertising screen of the Passage mall.

[25] On January 27, on behalf of Dnipropetrovsk businessmen, Korban appealed to Viktor Yanukovych, the Cabinet of Ministers of Ukraine, deputies of the Verkhovna Rada and local authorities with a call to stop using force and make concessions for the sake of the country’s unity.

[27][28] On January 28, Korban and Filatov left Ukraine, after declaring that they were being persecuted for their citizen’s position by the authorities of the Dnipropetrovsk region, supervised by Deputy Prime Minister Oleksandr Vilkul.

On February 5, in Tel Aviv, Korban gave an interview in which he outlined his vision of the situation in Ukraine, the main risks and ways out.

On February 19, after an attempt by the authorities to suppress the revolution by force, which led to mass casualties, Hennadiy Korban publicly addressed the leaders of all financial and industrial groups in Ukraine, urging them to take responsibility for saving the country: “The war has begun.

I suggest that the leaders of the largest financial and industrial groups immediately, today, start organizing peace talks between the authorities and the opposition.

[36] To stabilize the situation, on March 2, acting President Oleksandr Turchynov signed a decree appointing Kolomoyskyi as governor of the Dnipropetrovsk Oblast.

[45] From the very beginning Korban was actively involved in the transformation of Dnipropetrovsk into an outpost of Ukraine, where volunteer battalions were formed, logistical, material, and medical support for the Antiterrorist Operation was organized, refugees were evacuated from the ATO zone, etc.

He announced the intention of the new leadership of the Dnipropetrovsk Oblast to come up with an initiative to expand the powers of local self-government, financial decentralization, so that, among other things, the region could raise the salaries of state employees.

As a result, although there had been clashes between pro- and anti-Maidan demonstrators in Dnipropetrovsk before the victory of the Revolution of Dignity, pro-Russian riots and extremist violence were avoided in the region in March.

After that, by order of Korban, the paths of the Donets Railway at the entrance to the Dnipropetrovsk Oblast were blocked by KAMAZ vehicles, and the heads of the stations who participated in the conference call were fired.

On April 13, acting Head of State Oleksandr Turchynov announced the beginning of large-scale counter-terrorist actions involving the Armed Forces to combat Russian saboteurs and collaborators, called the “Anti-Terrorist Operation” (ATO).

[52] On the same day, Korban announced that on April 14, in coordination with Interior Minister Arsen Avakov, the formation of a special battalion “Dnipro” began.

[57] According to Korban in June 2014, the leaders of the Dnipropetrovsk RSA paid additional allowances to the fighters of the volunteer battalions, provided them with uniforms, body armor, dry rations - everything except weapons.

During Poroshenko’s visit to Dnipropetrovsk before the presidential elections, Kolomoyskyi and Korban tried to convince the future president that it was necessary to liberate the entire Donbass from occupation precisely through police operations because if the Armed Forces were involved on a large scale, the risk of symmetrical actions by Russia would be great.

Displaced persons were provided with temporary accommodation, assistance in the restoration of lost documents, regular compensation, support for the education and upbringing of children in schools and kindergartens.

[68] In March 2015, Korban mentioned that after the Ilovaisk tragedy, in September-October 2014, the authorities of the Dnipropetrovsk Oblast constructed the lines of deep defense to protect the area from a possible Russian invasion.

The evacuation was organized by Korban and carried out by the Hostage Release Center “Officer Corps” at the request of the Chief Rabbi of Dnipropetrovsk Shmuel Kaminetsky and the American Jewish Joint Distribution Committee.

Thanks to the modern technical equipment of the Command Center, the headquarters of the OC South got the opportunity to quickly monitor the airspace, the situation on the roads, checkpoints and strategic facilities, maintain high-quality communication with military units.

[80][81] Korban's allies in the UKROP party, MPs Andriy Denisenko and Vitaliy Kupriy, have publicly exposed the vote-buying system used by pro-presidential candidate Berezenko.

On August 9, 2016, Mykola Chaus, the judge of the Dniprovskyi District Court of Kyiv who ordered the detention of Korban, was caught with a US$150,000 bribe by the National Anti-Corruption Bureau of Ukraine.

In particular, the ECHR recognized as illegal the forced presence of Korban at court hearings after undergoing heart surgery in December 2015 (violation of Article 3 of the European Convention on Human Rights).

[101] According to Korban, President Petro Poroshenko,[102] as well as his associates MP Oleksandr Hranovskyi, Ihor Kononenko and then Prosecutor General of Ukraine Viktor Shokin, were the customers behind his persecution.

[108] After the beginning of the full-scale Russian invasion of Ukraine, on February 28, 2022, mayor Borys Filatov appointed him Chief of Staff of the Dnipro Defense Council.

His collection includes works of Gustav Klimt, Damien Hirst, Egon Schiele, Alexej von Jawlensky, Tamara de Lempicka, Takashi Murakami, Andreas Gursky, Yayoi Kusama and Banksy, among others.