KB Kookmin Bank finds 2,091 more people affected by data leak

KB Kookmin Bank said Monday that 2,091 additional people were found to have had personal information compromised in a hacking incident early this month. The total number affected rose to 2,210, including 119 people confirmed on Oct. 2. The bank said the increase came from a closer examination of data and processes, not another hacking attack.

The newly identified group includes 1,631 customers and 460 company executives and employees.

The bank had previously said information leaked from the 119 initially confirmed cases included names, phone numbers and addresses.

A bank official apologized for not determining the scale of the breach accurately in the early stages and said the bank would work to prevent a recurrence and protect customers.

KB Kookmin Bank was among more than a dozen financial institutions hit by back-to-back hacking cases early this month.

Published Oct 26, 2026 8:17 pm KST

A man passes a branch of KB Kookmin Bank in Seoul, Oct. 11. Yonhap

KB Kookmin Bank said Monday an additional 2,091 people were found to have had their personal information compromised in a hacking incident early this month.

The discovery increased the total number of people affected to 2,210 after 119 people were confirmed on Oct. 2 to have had their personal data leaked.

The additional people comprise 1,631 customers and 460 company executives and employees, the bank said.

The increase was not caused by any additional hacking attacks and was discovered through a close examination of data and processes connected to the system that initially came under attack, it said.

"We are sincerely sorry to our customers for not having been able to determine (the scale) perfectly in the early stages," a bank official said. "We will do our best to prevent a recurrence and protect our customers."

The bank had earlier said the leaked information included the names, phone numbers and addresses of the 119 people.

KB Kookmin was one of more than a dozen financial institutions that suffered back-to-back hacking cases early this month.

国民银行（KB Kookmin Bank）周一表示，本月初发生的黑客攻击事件中，又有2091人的个人信息遭到泄露。受影响的总人数上升至2210人，其中包括10月2日确认的119人。该银行表示，此次新增受影响人数是由于对数据和流程进行了更严格的审查，并非又一次黑客攻击。

新确定的群体包括 1,631 名客户和 460 名公司高管及员工。

该银行此前曾表示，从最初确认的 119 例病例中泄露的信息包括姓名、电话号码和地址。

一位银行官员就早期未能准确判断数据泄露的规模表示道歉，并表示银行将努力防止此类事件再次发生，保护客户。

本月初，KB国民银行是十几家遭受连续黑客攻击的金融机构之一。

发布于2026年10月26日晚上8:17（韩国标准时间）

10月11日，一名男子走过首尔一家KB国民银行分行。（韩联社）

国民银行周一表示，本月初发生的一起黑客攻击事件中，另有2091人的个人信息遭到泄露。

此次发现使受影响的总人数增加到 2210 人，此前 10 月 2 日确认有 119 人个人数据泄露。

该银行表示，新增人员包括 1631 名客户和 460 名公司高管及员工。

报告称，此次增长并非由任何额外的黑客攻击引起，而是通过仔细检查与最初遭受攻击的系统相关的数据和流程而发现的。

一位银行官员表示：“对于未能及早准确判断（事件规模）给客户带来的不便，我们深表歉意。我们将尽最大努力防止此类事件再次发生，并保护客户的权益。”

该银行此前曾表示，泄露的信息包括119人的姓名、电话号码和地址。

KB国民银行是本月初接连遭受黑客攻击的十几家金融机构之一。