Today's cyberwar between Russia and Ukraine implies a change in modern warfare since the need for digital fields has become as crucial as those of the physical world. In this study, we the intricacies of this cyber war by assessing its historical background, key cyber strikes and their far-reaching effects on infrastructure, economy, poverty etc. in Ukraine. The attackers’ modus operandi, tools they used, reasons for their actions, etc, are depicted via such events as the 2017 NotPetya malware outbreak and the 2015 Ukrainian power grid attack within the Russian cyber operations framework. Moreover, Ukraine’s defence mechanisms, owing to support from international bodies like the EU and NATO, especially during the 2014 crisis, are looked into, and their success rate is evaluated.