Before using computers, check the rule
東京大学情報倫理ガイドライン | 東京大学 (u-tokyo.ac.jp)
ガイドライン 2021版.indd (u-tokyo.ac.jp)
UTokyo-CERT stands for "University of Tokyo Computer Emergency Response Team",which is organized as a CERT for the information security issue in UTokyo. It will take some actions against security issues, collaborating with sub-CERT at the each department.
News - UTokyo-CERT (u-tokyo.ac.jp)