Russo-Ukrainian cyberwarfare
Cyberwarfare has been a component of the confrontation between Russia and Ukraine since the Revolution of Dignity in 2013–2014. While the first attacks on information systems of private enterprises and state institutions of Ukraine were recorded during mass protests in 2013, Russian cyberweapon Uroburos had been around since 2005.
Source: Wikipedia — Russo-Ukrainian cyberwarfare (CC BY-SA 4.0)