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Unauthorized Access to TSD Investor Portal Exposes Personal Data

Unauthorized Access to TSD Investor Portal Exposes Personal Data

First seen 28 Jul 2026, 02:49 UTC • •
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ThreatCluster AI
ThreatCluster •July 29, 2026 at 01:14 UTC
  • •Unauthorized access to TSD Investor Portal exposed some users' personal data.
  • •No impact on securities trading or investor assets was reported.
  • •TSD and SEC are coordinating to investigate and enhance cybersecurity measures.

Thailand Securities Depository Co (TSD) reported unauthorized access to personal data on its TSD Investor Portal, identified on July 26, 2026. The breach resulted in the exposure of some users' personal information, though it did not impact securities trading or investor assets. TSD immediately blocked access to the affected system and implemented enhanced cybersecurity measures. The Securities and Exchange Commission (SEC) is coordinating with TSD to investigate the incident and ensure corrective measures are taken. TSD has notified regulatory authorities and affected individuals, advising them to remain vigilant against phishing attempts. Users are encouraged to change passwords and review the security of their online accounts. The incident underscores the need for stronger cyber defenses in Thailand's financial sector.

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Updated 55d ago How this analysis works

Timeline

2026-07-26
Unauthorized access detected on TSD Investor Portal
TSD identified unauthorized access to personal data, leading to a data breach affecting some users.
Bangkokpost
2026-07-26
SEC receives preliminary incident report
The SEC was informed by TSD about the breach and began coordinating to investigate the incident.
Bangkokpost
2026-07-27
TSD implements containment measures
TSD blocked access from suspicious sources and enhanced cybersecurity monitoring following the breach.
Nationthailand
2026-07-27
TSD notifies affected individuals
TSD sent notifications to users whose personal data may have been compromised, advising caution.
Nationthailand

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