Unauthorised access to Arara exposes some Mitsubishi UFJ shareholders’ email addresses
SpilloverSpillover from the Arara incident · View original incident →Unauthorised access to Arara exposed the email addresses of some Mitsubishi UFJ shareholders. The same incident also exposed the email addresses of some Nomura shareholders.
Key facts
- Affected organisation
- Mitsubishi UFJ
- Original incident
- Arara email service cyber-attack exposes 81.33 million email addresses
- Incident type
- Data breach
- Occurred / detected
- Not confirmed
- Scale of damage
- Email addresses of some shareholders
- Cause / method
- Unauthorised access to Arara
- Location
- Japan
If your data was exposed
Exposed dataEmail
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Timeline
- It emerged that unauthorised access to Arara had exposed the email addresses of some Mitsubishi UFJ and Nomura shareholders.
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.