The data breach could create huge problems to Moscow. Both on the propaganda on Ukraine and the internal security level. Data could boost cyber warfare/espionage.
Crackers broke into the Voicenter servers and put on sale data on some 8,000 customers. Furthermore, the malicious hackers called them to increase pressure.
The hacker named Sangkancil claimed has hacked the CITY4U website, stealing the data, now on sale. The National Cyber Directorate investigates to verify the truthfulness.
Almost 8,700 people involved. However, the information possibly stolen does should not include financial or sensitive data within the meaning of the GDPR.