Nara Prefecture Welfare Center Mistakenly Sends Email to 126 Volunteers with Visible Recipient Names and Addresses

According to Security NEXT, on December 10, 2025, the Nara Prefectural Welfare Center for the Visually Impaired misdirected an email when contacting volunteer group members ^[1]. The email sent to 126 individuals mistakenly placed recipient addresses in the 'To' field, allowing recipients to view each other's email addresses and names ^[1]. The volunteer communication terminal used did not have the prefectural email system's automatic BCC conversion feature applied, and the staff member discovered the issue from quoted text in a reply ^[1].

Industries mainly affected: Government

The volunteer communication terminal used did not have the prefectural email system's automatic BCC conversion feature applied, and the staff member discovered the issue from quoted text in a reply ^[1].