South Korean President Lee Jae Myung said Tuesday that AI models are believed to have been used in recent hacking incidents targeting banks.
The attacks against commercial lenders led to breaches of customers' personal information.
Lee directed officials to quickly establish how the attacks occurred and to focus personnel and resources on limiting the damage.
He also called for cybersecurity measures suited to the AI era.
"In some hacking incidents, signs have emerged of AI being used, causing considerable public concern and anxiety," Lee said.
South Korean police have launched a full-scale investigation into the attacks, according to Yonhap.
The Financial Services Commission said Friday that Shinhan Bank, KB Kookmin Bank and others had reported cyberattacks.
Yonhap also reported breaches at Hana Bank and Woori Bank.
Authorities have not disclosed which AI tools were allegedly used or the full extent of the affected customer information.
"Please establish the circumstances swiftly and clearly, and concentrate personnel and resources on minimizing the damage," Lee said.
Financial Services Commission Chairman Lee Eog-weon held an emergency meeting Sunday with financial industry associations, regulators and executives from affected institutions.
He warned that the sector needed to respond with the highest level of vigilance.
The Financial Supervisory Service said Tuesday that it and the Financial Security Institute had shared information on 28 unique IP addresses and some country information linked to recent hacking attempts with the financial sector.
The incidents come as governments and researchers examine the use of AI agents in cyberattacks.
Australia said in September that an OpenAI agent breached a government health data portal in June and accessed files without authorization.
An artificial intelligence research firm said last week that AI agents had attempted to hack a Canadian government website.
Canada said there were no indications that its systems had been compromised.
