Being one of the largest financial institutions in Bulgaria, UBB’s cybersecurity posture is a critical aspect of their success. The bank manages massive volumes of sensitive customer and financial data and provides a wide array of digital services, including web and mobile banking. This expansive digital footprint is under constant threat from evolving cyberattacks.

This situation, supported by heavy regulation compliance requirements (like DORA and relevant national and EU financial regulations), has put UBB on the road to look for the best cybersecurity suppliers to cover their increasing needs to protect their customers and infrastructure through rigorous, ongoing security validation. They required a partner capable of conducting continuous, in-depth security assessments across their entire digital estate—web, mobile, internal applications, APIs, and operating systems—to ensure all potential vulnerabilities are identified and remediated before they can be exploited.

In 2025, UBB selected PriorityZero as their trusted advisor for continuous penetration testing of all of the bank’s critical applications, network, and infrastructure. This ongoing engagement was structured to provide a proactive and dynamic security validation program that matches the bank’s operational scale and regulatory demands.

PriorityZero established a long-term partnership with UBB, implementing a holistic security testing methodology that included:

• Continuous assessment of web and mobile banking applications to protect customer-facing services.
• Regular testing of internal web applications and APIs that underpin core banking operations.
• Security analysis of underlying operating systems and network infrastructure.

This continuous program ensures UBB maintains an agile security defense, identifying and addressing vulnerabilities as soon as they emerge from development or changes in the threat landscape. PriorityZero provides UBB with actionable intelligence and remediation guidance, significantly reducing the bank’s overall risk exposure and reinforcing its commitment to maintaining the highest level of security and regulatory compliance.