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And ST HD Says Cyberattack Potentially Exposes Data on 2.5 Million Customer Accounts

By Public Technologies
  • And ST HD suffered unauthorized server access on October 22, 2026, potentially exposing about 2.5 million customer accounts.
  • About 10,000 business partner accounts were also potentially affected; payment information and customer-set passwords were excluded from the affected data.
  • Membership point services remain suspended at physical stores and online, though both sales channels remain open.
  • Affected servers were isolated; the unauthorized access route was blocked by 5 p.m. on October 22.
  • The impact on current fiscal-year financial results remained under assessment as of October 23.


Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. And ST HD Co. Ltd. published the original content used to generate this news brief on October 23, 2026, and is solely responsible for the information contained therein.

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