# TSMC says employee data appeared on external website without authorization

_Published Thursday, November 12, 2026 at 8:18 AM EST · Security · Latest · Tier 2 — Notable_

TSMC said personal data belonging to some current and former employees appeared on an external website without authorization. The company verified that the information matched data stored in a cloud service provider's systems.

TSMC is notifying affected personnel and providing support. It has engaged the cloud vendor, investigating authorities and a third-party cybersecurity agency to establish the facts. The company said it found no evidence that its own systems were compromised and that the information was unrelated to operations or customer data.

## Sources

- [SEC EDGAR](https://www.sec.gov/Archives/edgar/data/1046179/000104617926000800/a20261112statementregardin.htm)

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Canonical: https://techandbusiness.org/newswire/7J-RVDmhaaoU5-UtVesfyw
Published: 2026-11-12T13:18:53.223Z
Story chronology: 2026-11-12T12:00:00.000Z
Retrieved: 2026-11-12T15:24:20.394Z
Publisher: Tech & Business (techandbusiness.org)