- Yoido Full Gospel Church in Seoul reported that personal data of up to 850,000 members may have been compromised, including names, birth dates, and address changes.
- Security firm Oasis Security discovered the stolen data on an overseas server alongside attack logs that mentioned AI sub-agents, though the exact role of AI remains unclear.
- Another Seoul megachurch, Sarang Church, lost records on about 89,000 members and 286 employees, while South Korea is also investigating suspected AI-assisted hacks at banks including Shinhan.
Yoido Full Gospel Church, the Seoul megachurch once recognized as the world’s largest congregation, said Wednesday that personal data tied to 850,000 members may have been stolen in a suspected cyberattack, according to local reports. The church’s initial review found names, dates of birth, and a log of changes members made to their records, including 2,629 changes to resident registration numbers.
Oasis Security, a Cybersecurity firm, discovered the data on an overseas server that also held attack logs and account details linked to Yoido and a second Seoul megachurch, Sarang Church, Korea” target=”_blank”>the firm reported. The logs showed activity of AI sub-agents and long, machine-written reports, though investigators are still determining how intruders gained access.
Sarang Church lost about 89,000 member records and 286 employee records, including the senior pastor’s, with the data stolen in August. Meanwhile, President Lee Jae Myung confirmed that AI is believed to have been used in recent hacks on South Korean commercial banks, including Shinhan Bank, where a breach exposed names, phone numbers, and borrowing limits for about 25,000 customers, local news reports said.
Consequently, Yoido Full Gospel Church plans to replace its firewall and bring in security firms to hunt for other weaknesses while notifying affected members. Bitcoin was trading at $83,463, down 0.17% over the past 24 hours, according to data included in the report.
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