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Data breach

Seoul Volunteer Center’s V-Class breach exposes all 29,553 members’ data

First reported · Last reported · 9 related reports

In September 2026, the personal information of all 29,553 members of V-Class, the Seoul Volunteer Center’s online education platform, was leaked. The attacker exploited a vulnerability in the service provider’s system to install a web shell and steal database access privileges, and also sent spam text messages using the operator’s sender number. The operator became aware of the incident following notification from its text messaging service provider approximately 67 hours after the initial intrusion. The Seoul Metropolitan Government and the Seoul Volunteer Center activated a joint response framework and strengthened personal information security measures.

Key facts

Affected organisation
Seoul Volunteer Center
Incident type
Data breach
Occurred / detected
Not confirmed
Scale of damage
Personal information of all 29,553 members
Cause / method
Installation of a web shell and theft of database access privileges through a vulnerability in the service provider’s system
Location
South Korea

If your data was exposed

View Seoul Volunteer Center notice ↗

Exposed dataUsernameNameEmailPasswordPhone number

  1. Change your password, and also change it on any other site where you use the same one. Turn on two-factor authentication if available.
  2. 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.
  3. If you’ve suffered harm, report it. Call 118 (no area code) for privacy violations, contact the police for financial losses, and apply for dispute mediation to seek compensation.Personal Information Infringement Report Centre ↗Korean National Police Agency cybercrime report ↗Personal Information Dispute Mediation Committee ↗

Lookup and notice links are official pages found by AI. Make sure the address is on the organisation’s official domain before using it.

Timeline

  1. An administrative audit revealed the leak of all 29,553 V-Class members’ personal information and the circumstances of the approximately 67-hour detection delay.
  2. The Seoul Metropolitan Government said it had activated a joint response framework with the Seoul Volunteer Center and strengthened personal information security measures.

9 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.