For Ukraine's main cybersecurity agency, Russia's full-scale war began over a month before Russian tanks rolled into Ukraine from all directions – with a large cyber attack on Jan. 14, 2022. "It all started with an attack on state authorities, it was the largest attack in 17 years," says Yurii Shchyhol, head of the State Special Communications Service, which is responsible for defending Ukraine's cyberspace. “This was the first indication for us that (Russia) was planning something big," he adds.