Ukraine Says Russian Hackers Breached Telecom Giant Months Ahead of Cyberattack – Reuters

Russian hackers infiltrated Ukraine’s main mobile operator Kyivstar months before launching a “disastrous” cyberattack that disrupted services for some 24 million users, Reuters reported Thursday, citing Ukraine’s cybersecurity chief. The Security Service of Ukraine (SBU) has said it suspects Russia’s secret service was behind the Dec. 12 Kyivstar attack that paralyzed its network for days.…