MUJI Postpones Online Store Reopening Following Large-Scale Data Breach

The Japanese retail company Ryohin Keikaku has officially postponed the scheduled reopening of its MUJI online store. This decision follows a sophisticated credential stuffing attack that compromised the company's digital infrastructure. The retailer is currently working to secure its systems before allowing customers to access the platform again. Company officials confirmed that the breach resulted in the potential exposure of sensitive personal information. This data includes the names and addresses of approximately 750,000 customers. The incident highlights the growing threat of automated cyberattacks against major retail brands. Credential stuffing occurs when hackers use lists of stolen usernames and passwords from other sites to gain unauthorized access to user accounts. Because many people reuse passwords across multiple platforms, these attacks often succeed even when the target company has not suffered a direct data leak. Ryohin Keikaku has not provided a specific date for when the online store will resume normal operations. The company is currently conducting a thorough investigation to determine the full extent of the unauthorized access. Affected customers are being notified as the retailer works to mitigate the impact of the security failure. Cybersecurity experts often warn that such breaches can lead to identity theft or further phishing attempts against the victims. Retailers are increasingly investing in multi-factor authentication and advanced monitoring tools to defend against these automated threats. The delay in reopening reflects the company's priority to restore trust and ensure the safety of its digital environment. Further updates regarding the status of the online store are expected to be released through official company channels in the coming days.