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South Korean megachurches probe suspected AI-linked cyberattacks

October 6, 2026 11:00 PM EDT

"AI Artificial Intelligence" words, a keyboard and a robotics hand in this illustration taken, September 23, 2026. REUTERS/Dado Ruvic/Illustration

SEOUL, Oct 7 (Reuters) - Two ‌South Korean ​megachurches ​are investigating suspected cyberattacks that may have exposed the personal data of hundreds of thousands of ‌congregants, with evidence suggesting AI tools may have been ⁠used in the attacks, according to the churches and a cybersecurity ‌firm.

Here are some details:

• Cybersecurity ‌company Oasis Security found data, attack records and account information on an overseas server that contained information linked ​to Seoul's Yoido Full Gospel Church and Sarang Church.

• Records of the alleged attacks included signs that AI ⁠tools were used during the intrusion, such as references to "sub-agents" and extensive attack reports ​that appeared automated, Oasis Security said.

• Yoido Full Gospel Church said on Wednesday that initial analysis ​indicated data relating to 850,000 members ‌may have been compromised.

• The data included names and dates of birth with a smaller ⁠number of records containing changes to national identification numbers, addresses and telephone numbers.

• The church said it was notifying affected members, ⁠blocking external access and changing server passwords.

• Sarang Church, in Seoul's Seocho ​district, said it had formed an emergency task force, reported the suspected incident to relevant authorities and was taking steps to determine what ‌happened and prevent further harm.

• The news follows hacking attacks against South Korean commercial banks ‌that led to a breach of customers' personal information. South ⁠Korean President Lee Jae ‌Myung said on ​Tuesday that AI was believed to have been used in the cyberattacks.

(Reporting by Joyce LeeEditing by Ed ‌Davies)



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