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Case File: Tokyo Electron U.S. Holdings, Inc. Data Breach

This file collects the dated facts on record for the Tokyo Electron U.S. Holdings, Inc. incident. The state report is dated March 20, 2025.

Timeline

  1. March 20, 2025Report filed in MarylandDate the notice was lodged with the Maryland Attorney General.

Case facts

Filing state
Maryland
Date reported
March 20, 2025
Receiving office
Maryland Attorney General

Case notes

Tokyo Electron U.S. Holdings, Inc., based in Maryland, has officially reported a data security incident. The filing, dated March 20, 2025, indicates that the company is actively investigating the scope and nature of the breach.

Public records currently do not specify the exact type of security incident that occurred, nor do they detail the categories of personal information that may have been compromised. The company’s filing confirms an ongoing investigation to ascertain these critical details.

Individuals who may be affected by this incident are advised to monitor for official notifications directly from Tokyo Electron U.S. Holdings, Inc. These communications should provide more specific information about what occurred and any steps the company is taking to assist those impacted.

While the specific data types involved remain under investigation, it is a recommended best practice to remain vigilant. Review your financial account statements, credit reports, and any explanations of benefits for unusual activity. Be wary of unsolicited emails, texts, or calls requesting personal information, as these could be phishing attempts. Consider placing a fraud alert or security freeze on your credit files to prevent unauthorized accounts from being opened in your name.

Questions about this case file

Where does the Tokyo Electron U.S. Holdings, Inc. case file come from?
Every entry is taken from the breach report Tokyo Electron U.S. Holdings, Inc. lodged with the Maryland Attorney General. Nothing here is estimated.
Why do the incident date and the report date differ?
Companies usually investigate before they report. The gap between the two dates shows how long that took.
What does the records-affected figure count?
It is the number the company gave the state. It can cover residents of that state only, so the national total may be higher.
Does this case file change over time?
Yes. When a company files an update or a new state publishes its copy of the report, the dates and counts here are refreshed.

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Filing source: Maryland Attorney General