Data of 100,000 Amersfoort residents leaked after hack at software supplier
The municipality of Amersfoort disclosed on December 3, 2024, that personal data of 100,000 residents was stolen from an external software supplier. The compromised data includes names, addresses, places of residence, dates of birth, gender, email addresses, and phone numbers. For approximately 7,000 individuals, the Burgerservicenummer (BSN) was also exposed. The data included information dating back to 2009, which should have been deleted according to municipal policy.
Signal context
First seen: Dec 3, 2024
Last updated: Jul 2, 2026
Status: Public signal
Key points
- Data of 100,000 residents stolen.
- External software supplier was hacked.
- Compromised data: names, addresses, dates of birth, gender, email, phone numbers.
Signal analysis
BetaThis analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Sector: Information
Likely country: 🇳🇱 Netherlands
inferred from company domain
The feed marks multiple actor roles. Treat this as a review signal rather than a final attribution.
- Source type: outside the affected organization
- Source type: supplier or third-party involvement
Impact area: Confidentiality
Likely asset: User or customer data
- 23 signals in the same sector
- 88 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Related signals
Grouped by why the signal is relevant.
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The Dutch intelligence services, AIVD and MIVD, have unlawfully processed personal data in bulk datasets, according to a ruling by the Committee for the Supervision of the Intelligence and Security Services (CTIVD). The report, published on July 1, 2026, states that groups of employees had unauthorized access to personal data, and large quantities of data were stored for too long. The bulk datasets, sometimes containing millions of records, include names, phone numbers, location data, social media data, and communication content, sourced from government agencies, commercially available datasets, or stolen datasets offered by criminals. The CTIVD has issued thirteen recommendations to improve the situation.
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