2006 — KDDI: Press report: Tokyo police have arrested two men…
Technical writeup
Press report: Tokyo police have arrested two men for trying to extort nearly US$90,000 from KDDI Corp. The pair allegedly threatened to disclose the existence of storage media containing personal data belonging to four million KDDI customers prior to a shareholder meeting; however, KDDI alerted the police as soon as they were contacted by the blackmailers; the police monitored communications between KDDI and the pair for several weeks.
Root cause
Hacked