https://www.theguardian.com/world/2022/apr/01/russia-ukraine-cyberwar

Putin may be ‘playing a long game’ on the cyber front, with attacks under way but not fully understood

The war in Ukraine has come with an ever-present threat of cyber catastrophe, as experts and US military officials remain on high alert for potential hacks. And while the big one has yet to come, the battle online continues to escalate.