[milos_rs]

United Group confirms that on Monday, 22 September, one of its subsidiaries in Bulgaria – Mainstream Bulgaria – was targeted by a malicious cyberattack carried out by external malefactors.

Thanks to swift action supported by leading cybersecurity specialists, the incident has been largely contained. An investigation is underway, and the relevant stakeholders have been notified in line with compliance obligations.

As a result of this attack, some of Vivacom’s business clients may be experiencing temporary technical difficulties with certain services. Restoring full functionality remains the highest priority for both Vivacom and Mainstream Bulgaria. Importantly, Vivacom’s core services – mobile and fixed connectivity – remain fully operational and unaffected.

https://united.group/cyber-incident-affe...-bulgaria/