A major European bank is investigating a possible ransomware incident after a hacking group claimed it had stolen data from the institution’s systems. The bank has not publicly confirmed the scope of any breach, and the claim has not been independently verified.

Cyberattacks on financial institutions can disrupt services, expose sensitive information, and increase pressure on customers and employees. Banks are frequent targets because of the large volumes of personal and financial data they store.

Authorities and security teams typically work to determine whether attackers gained access, what data may have been taken, and whether any customer accounts or internal systems were affected. In cases like this, firms often move quickly to contain potential damage while forensic reviews continue.

The incident adds to a growing wave of ransomware threats aimed at high-value targets across Europe and beyond, underscoring the persistent risk posed by criminal hacking groups that seek leverage through data theft and extortion.