Ryohin Keikaku security incident history
Hacking, data breaches and other security incidents involving Ryohin Keikaku, with related coverage.
MUJI warns of possible leak of 27.26 million customer records and 1.09 million card numbers
27.3MImpact: Possible exposure of up to approximately 27.26 million customer records and approximately 1.09 million card numbers
Unauthorized access to systems at MUJI operator Ryohin Keikaku may have exposed up to approximately 27.26 million app and online store customer records, including those of former members, and approximately 1.09 million card numbers. The customer information included email addresses, dates of birth, and gender, while the card numbers had been collected for a benefits program that ended in 2021 and were never deleted. The company acknowledged vulnerabilities in parts of its systems and shortcomings in information security and customer data management, reported the incident to the relevant authorities, and said it would strengthen internal controls. It also postponed reopening its online store because of possible unauthorized logins.
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