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au Bicycle Support

au Bicycle Support (run by KDDI Corporation) was hit in 1 recorded cybersecurity incident. The latest was disclosed on 2026-11-02.

About the service

Website

https://www.au.com/life/bicycle-support/

Run by

KDDI Corporation

Category

Other

For

People

Incident history

Disclosed 2026-11-02Updated 2026-11-06Chiba, Saitama, Tokyo[Investigating][Severity: Critical][Through a supplier][Major]
Prestige Core Solution: up to about 5.5 million records stolen, including three full card numbers
[Intrusion][Data leak][Service outage]Leaked 5.5MOrganizations 18

		Incident	Role	Impact level				Methods	Impacts		Status
2026-11-02	2026-11-06	Prestige Core Solution: up to about 5.5 million records stolen, including three full card numbers	[Through a supplier]	[Major]	[Critical]	18 Nissan Financial Services Co., Ltd., Prestige Core Solution Inc., KDDI Corporation, Sompo Japan Insurance Inc., BMW Japan Corp., BMW Japan Finance Corp., ENEOS Corporation, JACCS Co., Ltd., National Mutual Insurance Federation of Agricultural Cooperatives, SBI Insurance Co., Ltd., Subaru Corporation, 2Rinkan Yellow Hat Co., Ltd., AXA General Insurance Company, Limited, cyma Yellow Hat Co., Ltd., Porsche Financial Services Japan K.K., Porsche Japan K.K., Sony Assurance Inc., Zurich Insurance Company	Chiba, Saitama, Tokyo	[Intrusion]	[Data leak][Service outage]	5,500,000	[Investigating]

Other incidents of the operator (2)

Disclosed 2026-10-30Updated 2026-10-30 19:55Tokyo[Investigating][Severity: Major]
Lifenet and KDDI: au Life Insurance link system intrusion
[Web app exploit][Data leak][Service outage]Leaked 22.5KOrganizations 2
Disclosed 2026-06-23Updated 2026-07-06Aichi, Kagawa, Tokyo[Contained][Severity: Critical]
KDDI: unauthorized access to its mail system for ISPs
[Intrusion][Data leak]Leaked 12.2MOrganizations 7

		Incident				Methods	Impacts		Status
2026-10-30	2026-10-30 19:55	Lifenet and KDDI: au Life Insurance link system intrusion	[Major]	2 KDDI Corporation, Lifenet Insurance Company	Tokyo	[Web app exploit]	[Data leak][Service outage]	22,541	[Investigating]
2026-06-23	2026-07-06	KDDI: unauthorized access to its mail system for ISPs	[Critical]	7 JCOM Co., Ltd., KDDI Corporation, BIGLOBE Inc., Chubu Telecommunications Co., Inc., KDDI Web Communications Inc., NIFTY Corporation, STNet, Incorporated	Aichi, Kagawa, Tokyo	[Intrusion]	[Data leak]	12,231,954	[Contained]