The municipality of Epe in the Netherlands has confirmed that a major data breach exposed personal information belonging to nearly all of its residents, following an investigation into the cyber incident that occurred on March 12. The breach is one of the most significant municipal data exposures in recent times, affecting approximately 552,000 records.

According to the municipality, the compromised data includes highly sensitive personal details such as names, addresses, dates of birth, gender, and BSN (citizen service) numbers. In some cases – particularly for residents who had recently interacted with municipal services – additional information such as contact details, bank account numbers, and copies of identification documents may also have been accessed.

The municipality of Epe has stated that all residents will be formally notified about the breach via letter. Individuals whose ID copies were specifically compromised will receive separate communication and will be offered free replacement identification documents. Authorities are also urging residents to remain alert to potential identity theft, phishing attempts, and other forms of cyber fraud that may arise as a result of the incident.

Officials confirmed that login credentials for DigiD, the Netherlands’ digital identity authentication system, were not affected, as such data is not stored within municipal systems. However, the breach was carried out using a social engineering technique known as “ClickFix.” This method involves displaying a fake error message to users, prompting them to click on a malicious link that ultimately grants attackers unauthorized access to internal systems.

Following the discovery of the breach, the municipality has reported the incident to law enforcement authorities and notified the Dutch Data Protection Authority. Immediate response measures have been implemented, including resetting staff passwords and strengthening existing security protocols to prevent further unauthorized access.

The municipality is now working closely with police and cybersecurity experts to monitor whether the stolen data appears online or is distributed through illicit channels. At this stage, officials have not disclosed whether there has been any direct communication with the attackers responsible for the breach.

This incident underscores the growing cybersecurity challenges faced by public sector organizations, particularly as large volumes of sensitive citizen data become increasingly digitized. The scale and nature of the Epe breach highlight the urgent need for stronger defenses against social engineering tactics and improved resilience across municipal systems.

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