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Cyberattacks on South Korean Megachurches Expose Data of Over 1 Million Members

Cyberattacks on South Korean Megachurches Expose Data of Over 1 Million Members

First seen 7 Oct 2026, 10:57 UTC • •
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ThreatCluster AI
ThreatCluster •October 7, 2026 at 10:57 UTC
  • •Over 1 million records from two South Korean megachurches were compromised in cyberattacks.
  • •AI tools were reportedly used in the attack, indicating a sophisticated approach.
  • •Both churches are investigating the breaches and have implemented security measures.

Two major South Korean churches, Yoido Full Gospel and SaRang Community Church, were targeted in cyberattacks that compromised sensitive data of approximately 1.05 million members. The attacks were confirmed by Oasis Security, which found evidence of AI tools being used during the breaches. Yoido Full Gospel Church reported that around 960,000 member records were leaked, including names, addresses, and offering histories, while SaRang Church had data of about 89,000 congregants exposed. The attackers exploited vulnerabilities in the churches' ERP systems and groupware servers, using web shells and compromised credentials. Both churches are currently investigating the incidents and have taken steps to secure their systems. The attacks have raised concerns about the increasing use of AI in cybercrime.

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Timeline

2026-10-06
Oasis Security announces data breach
Oasis Security reported discovering sensitive data linked to the cyberattacks on the churches, including personal information and offering records.
Finance.Biggo
2026-10-07
Churches confirm data exposure
Yoido Full Gospel Church confirmed that data of approximately 850,000 members may have been compromised, while SaRang Church reported similar breaches affecting its congregants.
Foxbusiness

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Common questions

How many members are affected?
Approximately 1.05 million records from both churches were compromised.
What data was leaked?
The leaked data includes names, addresses, phone numbers, offering histories, and sensitive documents.
What actions are the churches taking?
Both churches are investigating the breaches and have implemented security measures to prevent further incidents.