Colosseum Dental Benelux

Colosseum Dental Benelux operates a network of dental practices providing oral healthcare services. The organization serves patients in Belgium and the Netherlands. Its core activities involve dental treatments and managing associated patient records, including sensitive medical histories, identification documents, and financial data. The scale of operations encompasses over 100 individual dental practices spread across these Benelux countries. This significant footprint indicates a substantial patient base relying on its services for routine and specialized dental care.

The organization faced a major cybersecurity incident in August 2022 when a ransomware attack disrupted its operations. This attack encrypted computer systems across its network, forcing temporary closures of practices and preventing access to critical patient records. Attackers demanded ransom for data restoration and threatened to publish allegedly copied sensitive information belonging to patients and employees. In response, Colosseum Dental Benelux engaged external cybersecurity experts to investigate the breach. The organization negotiated with the attackers, secured data restoration, and obtained non-disclosure agreements. It also notified the Dutch Data Protection Authority within required timelines. While forensic analysis could not definitively confirm whether attackers accessed or exfiltrated data, the unresolved risk of unauthorized exposure led to precautionary notifications being issued to potentially affected individuals. This incident underscores the organization's handling of highly sensitive personal data and its engagement with regulatory compliance processes following a breach.