You Have Got to Be KDDI-Ng – Japanese Telco Exposes 14.2 Million Managed Email Credentials
KDDI said the passwords were hashed and encrypted, but it warned that third-party customers may have had personal data exposed.
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9 Articles
You have got to be KDDI-ng – Japanese telco exposes 14.2 million managed email credentials
Japanese telco KDDI has messed up by allowing an attacker to access systems powering an email service it manages for itself and other local ISPs, and which stores info on up to 14.2 million users. The company yesterday posted a confession [PDF] that it detected unauthorized access to the email system it offers to third-party customers on June 17th. Machine translation of the confession suggests that KDDI investigated the situation and found atta…
KDDI announced on the 23rd that its email system, which it provides to internet service providers, had been subjected to unauthorized external access. It is suspected that up to 14.22 million user email addresses and passwords may have been leaked…
[Yomiuri Shimbun] KDDI announced on the 23rd that its email system, which it provides to internet service providers such as its subsidiary "BIGLOBE," was subjected to unauthorized access, and that up to 14.22 million user email addresses and passwords may have been leaked to external parties.
The Cyber Express
cybernoz.comKDDI Data Breach Exposes 14.22M Email Accounts
Japanese telecommunications company KDDI has disclosed a major cybersecurity incident in which up to 14.22 million email addresses and passwords may have been exposed through systems used by multiple internet service providers. The KDDI data breach has now become one of the most recent security events involving shared ISP infrastructure in Japan. The company confirmed that the data breach at KDDI was detected on June 17, 2026, after unauthorize…
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