Investigating

Life Card: data of 339,610 contracts may have leaked via Cuenote FC breach

Life Card was told on October 26 that unauthorised access to Ymir Link's Cuenote FC may have leaked some customer data, and announced this on October 28.

Last updated: 2026-11-09

Overview

339,610 contracts: names, emails, card product names and partial ETC numbers (60). No intrusion into the card-member system confirmed. This stems from the Ymir Link Cuenote FC intrusion (recorded separately); the figure is a subset of the vendor scope and must not be added to it.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

What you can do

Be wary of emails, SMS or calls impersonating the organisation; do not open links or attachments or enter passwords or card details. Change reused passwords on other services.

Sources

  1. 外部メール配信サービスへの不正アクセスに伴うお客さま情報漏えいの可能性についてライフカード株式会社 · 2026-11-09

Related information

ymir-link-cuenote-fc-data-exfiltration-2026

Related information

Share a report

No published information yet

Information appears here after source checks or moderation.

Comments and replies

Write a comment

No account needed. Comments appear immediately.

Do not post private names, addresses, passwords, or codes. Automatic masking is limited; review your content before submitting.

Required fields are marked *.

After submitting the text, you can redact and attach images.

Loading the security check. You can submit once it is complete.