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currently linked to this company
Company intelligence
Deventer cybersecurity incidents and threat signals
deventer.nl
This company page brings together public reporting currently associated with Deventer. It reflects signals published by Shadow Tier and should not be read as a complete incident history.
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Last 90 days
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July 1, 2026
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Based on all published signals currently linked to Deventer. Affected countries come from victim data; the company country above remains a separate profile fact. Counts describe this reporting set, not overall incident prevalence.
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Municipality of Deventer leaks BSNs and financial data due to email error
The Municipality of Deventer experienced a data leak due to a human error in sending an email, which was reported around January 30-31, 2025. The incident involved the accidental sending of an email containing citizen service numbers (BSNs), names, dates of birth, and loan/credit data of approximately 800 individuals to an incorrect email address. The data belonged to clients of the Budget Advies Bureau (BAD). The municipality informed the affected clients via letter, apologized for the error, and reported the incident to the Dutch Data Protection Authority. While the chance of risky consequences was deemed small, the municipality is analyzing its work processes and implementing measures to prevent future occurrences.
FAQ
Questions about Deventer cybersecurity reporting
What does the Deventer page include?
It combines a reviewed organization profile with all current published Shadow Tier signals explicitly linked to Deventer.
Does every mention of Deventer appear here?
No. A signal must contain a reliable company connection and meet the publication criteria; incidental or ambiguous mentions are excluded.
Why can the incident count change?
The page follows current published reporting. Counts change as new evidence is added, classifications are reviewed, or older signals leave the reporting window.