Ceres Discloses Data Breach at Point Income and CoinTrade Exposing Customer Records

Japanese company Ceres has confirmed two separate incidents of personal data exposure affecting its Point Income loyalty platform and its subsidiary Mercury's CoinTrade cryptocurrency service. In the first case, unauthorized access to a development environment allowed third parties to view backup customer data including nicknames, email addresses, encrypted passwords, and birth dates for approximately 11,100 users. A smaller set of device identifiers was also exposed. The second incident occurred through a third-party email service provider Arara, whose repica platform leaked 88,289 email addresses belonging to CoinTrade customers. Ceres and Mercury have notified affected users, blocked further access, and suspended email campaigns while investigating the root causes with their vendors.

ScanNetSecurityTranslated from Japanese

Read at source

Ceres has publicly disclosed two distinct personal information leaks affecting its Point Income points platform and the CoinTrade cryptocurrency exchange operated by its subsidiary Mercury.

On October 29, Ceres detected unauthorized external access to its system development environment. Subsequent investigation revealed that test and verification data stored temporarily in the environment had been viewed by third parties. The exposed records included a backup snapshot dated November 15, 2025, containing member information for roughly 11,100 individuals.

Exposed Data at Point Income

  • Nicknames, registered email addresses, encrypted passwords, encrypted secret questions, dates of birth, and point balances at the time of the backup
  • Phone numbers for 16 customers and one bank account name
  • Four device identifiers (terminal IDs) assigned to smartphones and other devices

Ceres immediately blocked external access to the development environment and identified the intrusion path. Affected members have been contacted individually by email.

Separately, on November 2, Mercury received notification from its vendor Arara that the email delivery system repica had suffered a data leak. Investigation confirmed that email addresses of customers who received messages between October 8 and October 29 had been exposed. A total of 88,289 unique addresses were affected.

Mercury has suspended all email campaigns through the compromised service and is currently informing customers via its website. Individual notifications will resume once email delivery is restored. Both companies continue to demand detailed explanations from the vendors regarding the causes and remediation measures.

Meridian digestThe week's most consequential security stories, distilled into one briefing.See the digest

More in Breaches & Leaks

Hacker Chimeraz Claims 259 Million Records Stolen from SGS French Vehicle Inspection Operations
Kensium Faces Unverified Claim of 18TB Data Theft Including Source Code and AWS Backups
Japan's Fire and Disaster Management Agency Suspends Anzen Joho System After Unauthorized Access Detected by Fujisoft