UK Defence Intelligence considers the cyberattack on the Ukrainian mobile operator Kyivstar to be one of the most destructive operations of its kind since the start of Russia’s full-scale invasion.
Source: UK intelligence review on 16 December
Details: UK intelligence pointed out that on 12 December, Kyivstar, Ukraine’s largest mobile operator, which provides mobile communications and internet to more than half of the population, suffered a cyberattack. Its effects lasted for at least two days.
Among other things, users were left without mobile communications and Internet access. The cyberattack also disrupted air-raid warning systems, some banks, ATMs and credit card terminals.
Quote: “With Ukraine’s government resources and emergency services affected, this incident is likely one of the highest-impact disruptive cyber attacks on Ukrainian networks since the start of Russia’s full-scale invasion.”
Background: Kyivstar CEO Oleksandr Komarov said that Russian hackers had breached the operator’s cyber defences through a compromised account of one of its employees.
As of Saturday, Kyivstar has fully restored voice, mobile and home internet services.