What should affected customers do now?
KDDI has urged customers across all six ISPs to reset their email passwords immediately and enable two-factor authentication wherever it's offered. The company says it has deployed technical defensive measures and reported the incident to Japanese regulatory authorities, but has not said when — or whether — the vendor will be named.
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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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