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Data breach

Daishin Securities hack exposes information on over 38,000 customers

First reported · Last reported · 81 related reports

A hacking incident at Daishin Securities on 27 October exposed information on over 38,000 customers. The exposed information included addresses and encrypted account numbers, and Daishin Securities said there had been no resulting harm. On 9 November, the company announced support measures for affected customers, including one year of insurance covering up to KRW 10 million in losses from voice phishing and smishing, a waiver of trading fees for Korean shares in December, and a cash payment of KRW 10,000.

Key facts

Affected organisation
Daishin Securities
Incident type
Data breach
Occurred / detected
2026-10-27
Scale of damage
Personal information of over 38,000 customers
Cause / method
External hacking
Location
South Korea

If your data was exposed

Check if my data was leaked ↗View Daishin Securities notice ↗

Exposed dataAddressBank account

  1. Don’t tap links in texts, calls or emails that mention this incident and offer compensation, refunds or breach checks. Check directly on the organisation’s official website or app.
  2. Turn on deposit and withdrawal alerts in your banking app. You can check all accounts in your name at once and request a payment suspension if needed.Account Info (integrated account management) ↗
  3. If you’ve suffered harm, report it. Call 118 (no area code) for privacy violations, contact the police for financial losses, and apply for dispute mediation to seek compensation.Personal Information Infringement Report Centre ↗Korean National Police Agency cybercrime report ↗Personal Information Dispute Mediation Committee ↗

Lookup and notice links are official pages found by AI. Make sure the address is on the organisation’s official domain before using it.

Timeline

  1. A hacking incident occurred at Daishin Securities.
  2. The exposure of information including addresses and encrypted account numbers of over 38,000 customers became known, and police launched a preliminary inquiry before formally opening a case.
  3. Daishin Securities announced support measures including compensation insurance, a waiver of trading fees for Korean shares in December, and a cash payment of KRW 10,000 per customer.

81 related reports

The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.