Ukraine's top mobile operator hit by biggest cyberattack of war so far

Ukraine's biggest mobile network operator, Kyivstar, was targeted in the largest cyberattack of the war with Russia so far, causing disruptions to mobile and internet services for millions of subscribers. The attack also affected the air raid alert system in parts of Kyiv region. The CEO of Kyivstar, Oleksandr Komarov, attributed the attack to the war with Russia but did not specify the responsible Russian body. The Ukrainian intelligence agency, SBU, is investigating the possibility of a cyberattack conducted by Russian security services. Kyivstar's IT infrastructure has been partially destroyed, and restoration of connection is uncertain.