The group was allegedly responsible for the attack on Poland’s anti-doping agency, POLADA. Earlier in August, the agency reported that hackers “supported by the services of a hostile state” were suspected of leaking over 50,000 confidential files, including medical records and testing histories of Polish athletes, from POLADA.
https://therecord.media/polish-anti-doping-agency-polada-hack-leak
According to Gawkowski, Poland’s Minister of Digital Affairs, cyberattacks on Poland have doubled since last year, amounting to more than 400,000 in the first half of the year. The country is an attractive target for pro-Russian hackers since it supplies military aid to Ukraine and hosts Ukrainian refugees
At that time, the group Beregini, which describes itself on Telegram as a “Ukrainian hacker group,” claimed responsibility for the attack, stating that it was a response to the Olympic Games being “turned into a political oppression instrument.”