Science & Tech · Cybersecurity · 2 hrs ago
Data from 1.26 million event-site members exposed in cyberattack
Hankyu Hanshin Department Stores, a Japanese department-store operator, said a cyberattack exposed data linked to about 1.26 million members of its event-booking site.
Its parent company, H2O Retailing, announced the breach on October 19.
The company said it detected unauthorized access on October 16.
The exposed information includes names, birth dates, email addresses, home addresses and mobile numbers.
So far, the company has found no evidence of misuse or further harm.
Unauthorized access was also detected on October 17 at two online shops operated by Hankyu Hanshin Department Stores, but whether those sites’ data was exposed is still being investigated.
The incident matters because the leaked details could put members’ privacy at risk, although no resulting harm has been confirmed.
Hankyu Hanshin Department Stores’ event reservation site was accessed without authorization, exposing personal information linked to about 1.26 million members.
H2O Retailing, the department store operator’s parent company, announced the breach on October 19.
The exposed information included names, dates of birth, email addresses, home addresses and mobile phone numbers.
The company said it had found no evidence of misuse or other harm from the leaked data.
Unauthorized access was also detected at two online shopping sites on October 17, and whether their data was exposed remained under investigation.
- Who
- About 1.26 million members of an event reservation site operated by Hankyu Hanshin Department Stores.
- What
- Personal information was exposed after unauthorized access to the site.
- When
- The unauthorized access was confirmed on October 16; H2O Retailing announced the breach on October 19, 2026.
- Where
- On an event reservation site operated by Hankyu Hanshin Department Stores. The company is based in Japan.
- Why
- Not stated
This story does not have two clearly opposing sides.
Hankyu Hanshin Department Stores confirmed unauthorized access to its event reservation site.
Unauthorized access was detected at two online shopping sites operated by the department store company; whether information was exposed was under investigation.
H2O Retailing announced that personal information linked to about 1.26 million members had leaked.
- Affected members
- About 1.26 million
- Site breached
- Hankyu Hanshin Department Stores’ event reservation site
- Information exposed
- Names, dates of birth, email addresses, addresses and mobile phone numbers
- Access confirmed
- October 16
- Announcement
- H2O Retailing, October 19, 2026