The Japan Chamber of Commerce and Industry said on the 10th that personal information on about 980,000 exam takers, including pass-fail results, may have leaked after an outside system used to book and manage online exams was accessed without authorization.
The data covers people who took online exams between April 1, 2022, and November 4, 2026. The tests include bookkeeping, retail marketing (salesperson), Nissho PC, business keyboard, Nissho programming and Nissho business English.
Names and dates of birth may have leaked, along with pass-fail results and exam scores. The chamber said it has completed work on the vulnerability and that online exams can be taken as normal.
The exams feed qualifications that employers use to screen and certify staff. A leak that ties named individuals to their scores exposes more than contact details.