section_path: Related issues/Hybrid warfare
section_name: Hybrid warfare
paragraph_text: Hybrid warfare
  
  The Russo-Ukrainian conflict has also included elements of hybrid warfare using non-traditional means. Cyberwarfare has been used by Russia in operations including successful attacks on the Ukrainian power grid in December 2015 and in December 2016, which was the first successful cyber attack on a power grid, and the Mass hacker supply-chain attack in June 2017, which the US claimed was the largest known cyber attack. In retaliation, Ukrainian operations have included the Surkov Leaks in October 2016 which released 2,337 e-mails in relation to Russian plans for seizing Crimea from Ukraine and fomenting separatist unrest in Donbas. The Russian information war against Ukraine has been another front of hybrid warfare waged by Russia.
  
  A Russian fifth column in Ukraine has also been claimed to exist among the Party of Regions, the Communist Party, the Progressive Socialist Party and the Russian Orthodox Church.