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Data breach

Unauthorised access to Arara raises email leak concerns in Yaita

First reported · Last reported · 3 related reports

SpilloverSpillover from the Arara incident · View original incident →

Unauthorised access to email distribution provider Arara raised concerns that email addresses associated with the city of Yaita may have been exposed. On 13 November, it emerged that email addresses had been leaked in four cities and towns in Tochigi Prefecture. The specific scale of the damage in Yaita and details of its response have not been confirmed.

Key facts

Affected organisation
City of Yaita
Original incident
Arara email service cyber-attack exposes 81.33 million email addresses
Incident type
Data breach
Occurred / detected
Not confirmed
Scale of damage
Not confirmed
Cause / method
Unauthorised access to email distribution provider Arara
Location
Japan

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Exposed dataEmail

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Timeline

  1. A possible leak of email addresses associated with Yaita came to light in connection with unauthorised access to Arara.
  2. Email address leaks affecting four cities and towns in Tochigi Prefecture came to light.

Original incident

This is spillover from the Arara incident.

  • Data breachAraraKnock-on victims: 25

    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.

    Related reports: 20 · last report →

3 related reports

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.