Nitori says breach may have exposed up to 37.62 million records
The retailer found unauthorized access on November 6 and says intruders may also have been inside its systems in mid-to-late October, with corporate members among those affected.
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Unauthorized Access
Docomo says ID document numbers leaked in breach, weighs compensation
The carrier widened its list of exposed data to include identity-verification document numbers and contract details, and says it is considering payments to affected users.
SoftBank chief apologizes as IDC Frontier breach ran just seven minutes
Junichi Miyagawa said the attack exploited a flaw in open-source software the company had never checked, and that stopping services to cut off intruders now takes priority.
Nitori says data on up to 37.62 million customers may have leaked
The furniture giant confirmed unauthorized access to its systems on Nov. 6, with names, addresses and purchase histories possibly exposed.
MUJI Online Store Stays Shut as Credential-Stuffing Attack Hits Roughly 270,000 More Accounts
Ryohin Keikaku postponed the relaunch of its MUJI online store after a third party reported a list-type attack using stolen IDs and passwords, widening a breach that may already cover 27.26 million people.
Japan logs record 233 cyberattack disclosures in October as leaked personal data nears 185 million
Unauthorized access at the printing service Rakusul may have exposed print data and invoice details, as Trend Micro links a surge in leaks to autonomous AI-agent attacks.
Toyohashi says citizen email addresses may have leaked after contractor hack
A Tokyo company handling My Number card appointment emails for the city was breached on October 28, and the city has halted reservation messages while it checks the system.
H2O Retailing president apologizes after 1.26 million customer records leak at Hankyu Hanshin department stores
The parent company's chief executive said sorry at a half-year earnings briefing after unauthorized access to three booking sites exposed names and addresses, and a separate breach at an email contractor exposed about 28,000 addresses.
Seven-Eleven Japan says contractor's platform breached, customer names leaked
More than 160,000 orderers' names were exposed after unauthorized access to a system run by a company handling part of the 7NOW delivery service. Card details and passwords were not affected, the chain says.
Police Agency Sets Up Joint Task Forces as Data Leaks Pile Up
The National Police Agency and all 47 prefectural forces will investigate cyberattacks together, with a separate team formed for the breach at a GMO Internet cloud service.
NTT Docomo mobile service hard to use nationwide, carrier says
Voice calls, data and SMS are affected across the country, with the carrier warning the disruption may also hit emergency calls.
GMO's three-hour apology: the founder talked, the share price listened
Masatoshi Kumagai fronted the group's response to a major data breach himself. The apology became a monologue, and governance concerns showed up in the stock.
Nara food site's old domain taken over by third party, county warns
The prefecture says a contractor forgot to renew the address, and a near-copy of the promotional site now appears there.
Japan's security awareness association hit by unauthorized access, up to 15,128 records possibly leaked
JNSA took its information-security quiz service offline after confirming the breach on November 4, and says it has not yet traced how the intruder got in.
Fan emails leak at five Pacific League clubs; Chiba Lotte site also breached
More than 13,000 email addresses were exposed through an outside mailing service, and an intrusion at the Marines' official site pulled down nicknames and member emails.
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