What happened in the KDDI data breach?
Attackers exploited a vulnerability in unnamed third-party software to reach a shared email platform serving six Japanese ISPs — KDDI, STNet, JCOM, Chubu Telecommunications, NIFTY, and BIGLOBE. KDDI disclosed that the email addresses and passwords of up to 14.2 million current, former, and inactive customers may have been exposed.
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One Vendor Flaw Just Exposed 14.2 Million Logins Across Six Japanese ISPsA flaw in one unnamed vendor's software let attackers into a shared email platform, exposing up to 14.2 million accounts across six Japanese ISPs.
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