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.

Case file

Case File: SMC Corporation of America/ Advanced Pressure Technology (APTech) Data Breach

This file collects the dated facts on record for the SMC Corporation of America/ Advanced Pressure Technology (APTech) incident. The state report is dated March 10, 2025. The incident itself is dated December 3, 2024.

Timeline

97 days separate the incident date from the date it was reported.

December 3, 2024Incident dateWhen the filing says the breach took place.
March 10, 2025Report filed in CaliforniaDate the notice was lodged with the California Attorney General.

Case facts

Filing state: California
Date reported: March 10, 2025
Incident date: December 3, 2024
Receiving office: California Attorney General

Case notes

SMC Corporation of America, along with its Advanced Pressure Technology (APTech) division, both operating in California, recently filed notice of a data security incident. This event was identified as beginning on December 3, 2024, and the company formally reported it on March 10, 2025.

At present, the exact nature of the breach type and the specific categories of personal information involved have not been publicly specified. The companies have indicated that the situation is still under investigation to determine the full scope and impact of the incident.

For those who may have been impacted, this means that some of your personal information may have been compromised. Until the investigation concludes and specific details are released, the full extent of the exposure remains undefined.

While details are pending, it is a good practice for individuals to remain vigilant. Regularly review your account statements and credit reports for any suspicious or unauthorized activity. Be cautious of unsolicited communications, especially those requesting personal or financial details.

If you receive an official notification letter from SMC Corporation of America or APTech, it will contain specific details about what information was involved and recommended steps. Act promptly on any instructions provided in such communications.

This information is based on public filings submitted to regulators concerning the data security incident.

Questions about this case file

Where does the SMC Corporation of America/ Advanced Pressure Technology (APTech) case file come from?: Every entry is taken from the breach report SMC Corporation of America/ Advanced Pressure Technology (APTech) lodged with the California 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.

California data breaches

Filing source: California Attorney General

Named in the SMC Corporation of America/ Advanced Pressure Technology (APTech) breach?

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How this case file was put together

This case file follows the SMC Corporation of America/ Advanced Pressure Technology (APTech) breach step by step, from when the incident happened to when it was filed with the California Attorney General. Each date and figure in the timeline is taken from that filing, and the file is updated if a later filing changes them. DataBreachCaseFile.com keeps the record; it does not give legal advice or represent anyone.

View the official California Attorney General filing Browse the registry

Is your letter part of this case file?

This file tracks the dates and filings in the SMC Corporation of America/ Advanced Pressure Technology (APTech) breach, not individual letters. To have your own notice looked at, Data Breach Legal Team (a separate site) reviews breach letters for free.

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Timeline

Case facts

Case notes

Questions about this case file

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