Kr: Financial Security Institute reports data leak following hacking incident

Databreaches • November 10, 2026

Korea’s state-run Financial Security Institute (FSI) reported a data leak following a hacking attack targeting its security assessment system, officials said on Tuesday. The FSI, which oversees financial information provided by banks and insurers, detected the breach the day, according to financial authorities. The leaked information reportedly came from the FSI’s website used to conduct security assessments of financial institutions. Officials said that some information related to the security status submitted by financial firms may have been compromised.

Korea’s state-run Financial Security Institute (FSI) reported a data leak following a hacking attack targeting its security assessment system, officials said on Tuesday.

The FSI, which oversees financial information provided by banks and insurers, detected the breach the day, according to financial authorities.

The leaked information reportedly came from the FSI’s website used to conduct security assessments of financial institutions.

Officials said that some information related to the security status submitted by financial firms may have been compromised.

Source: Korea JoongAng Daily

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

Data Leak at South Korea's Financial Security Institute Following Cyberattack On November 10, 2026, South Korea's Financial Security Institute (FSI) reported a data leak due to a hacking attack targeting its security assessment system. The breach was detected at 3 p.m. on November 7, prompting immediate action to block the affected system. The leaked data includes approximately 200 administrative forms, around 300 pieces of personal data such as names and birthdates, and about 350 user-related information entries. The attack involved a method where the hacker frequently changed IP addresses to disguise unauthorized access. The FSI has informed the Financial Services Commission and the Korea Internet & Security Agency (KISA) about the incident. The full extent of the compromised information related to the security status submitted by financial firms is still under investigation. 2 sources 37

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Kr: Financial Security Institute reports data leak following hacking incident

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