TSD blocks cyber threat after Investor Portal data leak

SUNDAY, JULY 26, 2026
TSD blocks cyber threat after Investor Portal data leak

Thailand Securities Depository has contained a data leak on its Investor Portal and notified regulators and potentially affected users

  • Thailand Securities Depository (TSD) detected a personal data leak on its Investor Portal caused by unauthorized access.
  • The company immediately blocked access to the affected system to stop the leak and has strengthened its cybersecurity monitoring.
  • TSD confirmed that the breach did not affect securities trading, financial information, or any assets held in its custody.
  • The incident was reported to regulatory authorities, and TSD is notifying the affected data owners as required by law.

Thailand Securities Depository Co Ltd (TSD) has detected unauthorised access to users’ personal information through its TSD Investor Portal, resulting in the exposure of some personal data.

TSD said it immediately blocked access to the affected system and stopped the leak after discovering the incident. It has also strengthened its cyber-security monitoring and preventive measures.

The company followed legally required procedures after detecting the breach, including reporting the incident to the relevant regulatory authorities and notifying data owners who may have been affected.

TSD stressed that the incident had no impact on securities trading, financial information or any assets held under its custody.

The company advised users to exercise greater caution over emails, SMS messages or telephone calls from people falsely claiming to represent an organisation in an attempt to obtain information.

Users should not click links or provide passwords or personal information to anyone whose identity or source cannot be clearly verified. TSD also recommended changing passwords regularly to help protect personal data.

TSD Investor Portal users seeking further information may contact the TSD Contact Centre on 0-2009-9999 or through the Stock Exchange of Thailand’s contact centre webpage. Questions concerning securities trading accounts should be directed to the user’s securities company.