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Case File: Cerner Corporation Data Breach

This file collects the dated facts on record for the Cerner Corporation incident. The state report is dated July 25, 2025. The incident itself is dated January 22, 2025.

Timeline

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

  1. January 22, 2025Incident dateWhen the filing says the breach took place.
  2. July 25, 2025Report filed in CaliforniaDate the notice was lodged with the California Attorney General.

Case facts

Filing state
California
Date reported
July 25, 2025
Incident date
January 22, 2025
Receiving office
California Attorney General

Case notes

Cerner Corporation officially reported a data breach incident to regulatory authorities in California on July 25, 2025. This filing indicates that the breach initially occurred on January 22, 2025, and the company is actively investigating the scope and nature of the event. This information is derived from public filings with regulators.

The specific categories of personal information exposed in this incident were not detailed in the public filing. Cerner Corporation has indicated an ongoing investigation to ascertain precisely what data was involved and the full impact of the breach.

At this time, details surrounding the methods or circumstances of the breach remain part of the ongoing investigation. Individuals who receive a direct notification from Cerner Corporation regarding this incident should carefully review it for personalized information.

While the investigation is underway, individuals potentially affected by this incident are advised to remain vigilant. It is prudent to monitor all personal accounts and financial statements for any unusual activity or transactions that you do not recognize.

General protective steps include regularly reviewing your credit reports from the major bureaus, being cautious of unsolicited communications that request personal details, and considering placing a fraud alert or security freeze on your credit if you have significant concerns. These measures are widely recommended to help safeguard against potential misuse of personal information.

Recipients of official breach notification letters from Cerner Corporation should cross-reference the details provided in their letter with any public filings to ensure consistency and to fully understand the specific circumstances pertaining to their data.

Questions about this case file

Where does the Cerner Corporation case file come from?
Every entry is taken from the breach report Cerner Corporation 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.

More California case files

California data breaches

Filing source: California Attorney General