Computer servers at five Japanese universities hacked

An international group of hackers targeting five universities in Japan has leaked what appears to be personal information belonging to the institutions' students and professors.

The group, which calls itself GhostShell, targeted the University of Tokyo, Kyoto University, Nagoya University, Tohoku University and Osaka City University.

GhostShell issued a statement on Oct. 1 claiming to have hacked computer servers at 100 universities around the world, including Harvard and Cambridge, and has posted personal information of about 120,000 people on its website. Officials at the University of Tokyo confirmed that the e-mail addresses, names and telephone numbers of people who appear to be students and professors were leaked. The information was stored on four computer servers at the university. The university has closed the sites from which the information was stolen.