Missing USB memory containing 3,553 residents’ personal data reported in Anamizu, Ishikawa
Anamizu Town announced on July 27, 2026 that a missing USB memory holding personal data for 3,553 residents has not been located; the town is searching and investigating.
Anamizu Town in Ishikawa Prefecture announced on July 27, 2026 that a single USB memory stick containing the personal information of 3,553 people is missing from municipal offices.
The missing USB memory held names, addresses, dates of birth and sex for residents who were targets of last year’s specific health checks and late-stage elderly health checks.
The town said the file covers more than half of Anamizu’s population of 6,541, prompting officials to begin an internal search and an administrative inquiry.
Town announcement and timeline
The town made a public announcement on July 27 after confirming the absence of the device from routine storage.
Officials said the USB was last noticed missing from its usual office shelf on the evening of July 9, 2026, when a section chief discovered it was not where it is normally kept.
Town staff reported the device had been used by a welfare division employee and was intended to support contact and mailings to eligible residents.
Contents of the missing file
According to the town, the USB contained identifying data fields for 3,553 people, including full names, home addresses, birth dates and recorded sex.
Those records correspond to last year’s specific health examinations and health checks for the late-stage elderly, meaning many of the affected individuals are likely to be older residents.
Town officials emphasized the data did not include financial account information or medical diagnoses in the description provided at the time of the announcement.
Internal handling and access practices
The municipal welfare division said the file had been accessed without a password with the permission of the division chief for administrative tasks such as outreach and sending notices.
A staff member who last used the USB told investigators they placed it on their desk after use, and it was not returned to the usual storage location.
Town statements indicated there is currently no confirmed evidence that the data have been copied, disclosed or used unlawfully.
Investigation and immediate measures
Anamizu Town said it has commenced an internal inquiry and is conducting a thorough search of municipal facilities and workflows to locate the device.
Officials are interviewing personnel who handled the file and reviewing the sequence of custody to establish how the USB went missing and to identify any gaps in procedures.
The town also indicated it will consider technical checks and log reviews for systems that interacted with the dataset to determine whether any transfers or access events occurred beyond routine use.
Privacy concerns and administrative review
Privacy experts and municipal governance advocates often stress that portable storage devices should be encrypted and access-restricted when holding personal data, and the town’s disclosure has renewed scrutiny of such practices.
Under Japan’s Act on the Protection of Personal Information, local governments are expected to implement appropriate safeguards for resident data; the absence of password protection on the USB has drawn attention to those standards.
Town officials said they will review their data-handling protocols and consider measures such as mandatory encryption, stricter custody rules and additional staff training to prevent recurrence.
Residents of Anamizu were urged by the town to remain vigilant for any suspicious mail, calls or other contact that might seek personal information, though the municipality noted there is no evidence so far of misuse.
The town has not yet outlined a formal notification plan for affected residents beyond the public announcement, but officials said they will provide updates as the investigation advances.
Local authorities and the town administration are continuing the search and inquiry while examining administrative changes to strengthen protections for personal information.
The missing USB incident has put a spotlight on how small municipalities manage large datasets and prompted calls for prompt corrective action while the town works to locate the device and clarify next steps for the thousands of residents whose records were contained on it.
