The team is believed to be behind the December 2015 Ukraine power grid cyberattack, the 2017 cyberattacks on Ukraine using the Petya malware, various interference efforts in the 2017 French presidential election, and the cyberattack on the 2018 Winter Olympics opening ceremony. Then-United States Attorney for the Western District of Pennsylvania Scott Brady described the group's cyber campaign as "representing the most destructive and costly cyber-attacks in history."