Keio University: intrusion into the SFC email system

Suspicious traffic was detected and the entry route blocked on November 26. A zero-day in a Cisco quarantine server was suspected. The university assessed leakage as nearly certain for 6,447 directory entries with names and passwords and 1,025 graduate email-only entries, totaling 7,472. Up to 222,508 quarantined messages were also potentially exposed, though mass transfer was assessed as unlikely. Passwords were reset on December 23 and 25.