Science & Tech · Cybersecurity · 1 hr ago
Daishin Securities says customer data of 38,490 people was exposed
Daishin Securities says data from 38,490 customers was exposed in a breach in South Korea.
The company detected suspicious access to a server on October 17, which was used to link customers to online investment account openings.
The exposed information included names, contact details, bank names and account numbers, as well as other account identifiers.
The company says it blocked the IP addresses used in the attack and reported the incident to regulators while investigating with the Korea Financial Security Institute.
After 10 days of investigation, it said no signs of further harm or access to core systems had been found so far.
Its chief executive apologized, and the company says it will take steps to protect customers and prevent a repeat.
Daishin Securities said personal credit information belonging to 38,490 customers was exposed.
The company said suspicious access was detected on October 17 at a server linked to remote securities account openings.
It blocked the IP addresses used in the attack and reported the incident to regulators.
A ten-day investigation found that eight categories of customer information had been exposed.
Daishin said it had found no signs of secondary harm to customers or illegal access to core business systems.
- Who
- Daishin Securities said information belonging to 38,490 customers was exposed.
- What
- Personal credit information was exposed. The company identified eight categories of information.
- When
- Suspicious access was detected on October 17, 2026. Daishin announced the findings on October 28.
- Where
- At a server linked to remote securities account openings.
- Why
- Not stated.
This story does not have two clearly opposing sides.
Daishin detected signs of abnormal access at a server linked to remote securities account openings.
The company blocked the attack IP and bypass-access IP addresses and reported the incident to regulators.
Daishin confirmed that eight categories of customer information had been exposed.
Daishin disclosed that information belonging to 38,490 customers had been exposed.
- Customers affected
- 38,490
- Detection date
- October 17
- Information categories
- 8
- Investigation period
- 10 days
- Exposed information
- Names, email addresses, home addresses, telecom IDs, bank names, encrypted deposit and withdrawal account numbers, Daishin securities account numbers, and mobile phone numbers
3 sources
What people are saying
We take this personal (credit) information leak very seriously and deeply apologize to our customers.
We will responsibly implement the measures needed to protect customers and prevent a recurrence.