KDDI Breach Exposes Millions of Japanese Email Accounts
📧 KDDI has confirmed an unauthorized intrusion into an email system it provides to several Japanese ISPs, potentially exposing up to 14.22 million email addresses and passwords. The incident, detected on June 17, affected customers across multiple providers, including JCOM, Nifty, Biglobe and others. KDDI said the attacker likely exploited a vulnerability in third-party software and has implemented technical countermeasures. The company is collaborating with affected ISPs and authorities and has urged users to change their passwords.
