Latest cybersecurity reporting from selected sources.

Kyivstar Parent Veon Attributes Losses to Customer Retention MeasuresA December cyberattack on Ukraine's top telecom operator, which authorities in Kyiv attribute to the Russian military, will cost the parent company nearly $100 million. Ukraine in mid-December accused the Russian General Staff Main Intelligence Directorate of perpetuating the incident.

Telecom Operator Slowly Restores Voice ServiceUkraine's domestic security agency on Wednesday fingered Russian military hackers as being responsible for hacking Kyivstar, in a statement acknowledging damage to the telecom operator's digital infrastructure. Ukraine's top telecom operator was the target of a Tuesday cyberattack.

The Computer Emergency Response Team of Ukraine (CERT-UA) on Tuesday disclosed that it thwarted a cyberattack by Sandworm, a hacking group affiliated with Russia's military intelligence, to sabotage the operations of an unnamed energy provider in the country

Ukraine is recruiting a volunteer "IT army" of security researchers and hackers to conduct cyberattacks on thirty-one Russian entities, including government agencies, critical infrastructure, and banks. [...]