Ukrainian hackers, allegedly affiliated with the Security Service of Ukraine (SBU), have launched a significant cyber operation against Rosvodokanal, Russia’s largest private water supply company serving 7 million consumers, Liga media outlet reported, citing an undisclosed source.
The source described this operation as “revenge for the attack on Kyivstar.”
On the morning of 12 December, the largest Ukrainian telecommunications operator Kyivstar, and one of the country’s leading banks, Monobank, came under a hacker attack, which caused a technical failure and made mobile communications and Internet access unavailable.
On 20 December, the Blackjack hackers group orchestrated a powerful cyberattack, crippling the IT infrastructure of Rosvodokanal, Liga reported.
The source reveals that the company’s operations are currently disrupted. During the attack, hackers encrypted over 6,000 computers and deleted more than 50 TB of data, including internal documentation, corporate email, cybersecurity services, and backup copies. The SBU is now analyzing 1.5 TB of data extracted from Rosvodokanal, as per the sources.
In a related cyber offensive, the IT Army of Ukraine, on 20 December, claimed responsibility for a successful attack on the servers of the Russian cloud service Bitrix24, which is used by entities including the war sponsor Rosneft. This attack resulted in 40% of Bitrix24 users experiencing access issues to CRM systems and other services.
The IT Army of Ukraine published screenshots indicating malfunctions on the CIS servers, particularly in Russia, Belarus, and Kazakhstan, with disruptions observed in Moscow, St. Petersburg, Yekaterinburg, and other Russian cities.