Sofia, September 26, 2025 – On Monday, September 22, at 02:17 EET, Mainstream Bulgaria experienced a cyber incident that resulted in a temporary service disruption.
Our team immediately launched our incident response protocols to contain the incident, initiate recovery measures and prioritize the continuity of our clients’ operations.
An investigation is ongoing. We have notified the relevant stakeholders in line with our compliance obligations, and we are working closely with independent cybersecurity experts to establish the full circumstances of the incident. Their findings will inform all necessary remediation and prevention measures.
Restoring full functionality remains our highest priority. We are committed to minimizing operational impact, protecting customer data, and strengthening the resilience of our digital infrastructure.
Importantly, our operations in other countries have not been affected and continue without interruption.
Cyberattacks are an unfortunate reality for companies worldwide, and Mainstream continues to prioritize investment in the security and resilience of its digital infrastructure.
We sincerely apologize for any inconvenience this incident may have caused and thank our customers and partners for their understanding and trust. We will continue to communicate transparently and provide updates as appropriate.
Praktičan vodič za startape o tome kako da smanje troškove cloud infrastrukture uz pomoć besplatnih kredita, pametnih alata i efikasnog upravljanja.
Complete audit of Kubernetes in an on-premise environment on the example of real clients and return to old-school dev mindset.
The partnership between Mainstream and HC Center represents a synergy of innovative cloud solutions and expertise in digital transformation, providing advanced services to accelerate digitization in Southeast Europe.
Mainstream is the largest provider of innovative cloud solutions and managed hosting services with a network of 10+ data centers in Southeast Europe.
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