L’Arc-en-Ciel fan club email addresses exposed in Arara breach
SpilloverSpillover from the Arara incident · View original incident →L’Arc-en-Ciel said on 10 November that fan club users’ email addresses had been leaked following a breach of the external email delivery service Arara Message. Those affected were people registered for the email service for paid members as of 31 October 2026, and email addresses were the only information confirmed to have been leaked. The operator, Fanplus, moved to a new email delivery system.
Key facts
- Affected organisation
- L’Arc-en-Ciel Fan Club
- Original incident
- Arara email service cyber-attack exposes 81.33 million email addresses
- Incident type
- Data breach
- Occurred / detected
- 2026-10
- Scale of damage
- Not confirmed
- Cause / method
- Unauthorised access to Arara
- Location
- Japan
If your data was exposed
- Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
Timeline
- The L’Arc-en-Ciel fan club data leak caused by unauthorised access to Arara became known.
Original incident
This is spillover from the Arara incident.
Arara email service cyber-attack exposes 81.33 million email addresses
81.3mImpact: 81,329,467 email addresses and some customers' member information
Japan's Arara Message email delivery service was breached through a web server vulnerability, exposing email addresses and some customers' member information. Further investigation put the number of unique email addresses exposed at 81,329,467. The attacker also misused the service to send up to approximately 7.13 million emails impersonating credit card companies, and the company isolated the servers and suspended its email delivery service entirely.
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The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.