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KDDI telecom breach affects up to 12 million
Personal information of the Japanese carrier's customers was exposed.
- Organisation
- KDDI
- Disclosed
- 8 July 2026
- Affected
- 12,000,000
- Data
- Personal information
- Attacker
- Unknown
- Severity
- critical
- Region
- Global
- Source
- CM Alliance monthly roundup ↗
Cite this
Nuffield Consulting, “KDDI telecom breach affects up to 12 million”, The Daily Tech Wire outage & breach log, 8 Jul 2026. https://techwire.nuffieldconsulting.com/incidents/2026-07-08-kddi-breach/ (retrieved 15 Nov 2026).
This entry summarises public reporting. Please also cite the original source: CM Alliance monthly roundup, https://www.cm-alliance.com/cybersecurity-blog/major-cyber-attacks-data-breaches-ransomware-attacks-in-july-2026.
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