The Yomiuri Shimbun reports:
A computer at the University of Tokyo had been infected with malware, possibly leaking up to 4,341 files containing addresses and grades of students from the academic years of 2003 to 2022, the university said Tuesday.
The PC belonged to the Graduate School of Arts and Sciences, the College of Arts and Sciences, the University of Tokyo, Komaba.
Read more at The Japan News. The report doesn’t explain why it took from when the malware was inserted until now to discover it.