Educational Testing Service (California Department of Education) Data Breach: What Happened and What You Should Do
Educational Testing Service (California Department of Education) disclosed a data breach affecting an unconfirmed number of people. Here's what is currently known about the incident, what information may have been exposed, and steps you can consider taking.
- Company
- Educational Testing Service (California Department of Education)
- People affected
- Undisclosed
No total has been published. The notice covers all students enrolled in California public schools in the three previous school years, plus some former students.
- Incident date
- May 22 – September 18, 2026
- Discovered
- September 25, 2026
- Disclosed
- October 16, 2026
- Information exposed
- Possibly: Name, Date of birth, Physical address, Health information, Other personal information
- Status
- Notification underway
California AG sample notice listed October 16, 2026 (sb24-631485); CDE incident page www.cde.ca.gov/ets; 24 months of complimentary Experian IdentityWorks offered.
What happened in the Educational Testing Service (California Department of Education) breach?
How the attacker got in
An unauthorized party used a compromised login credential to access an ETS SFTP site used to exchange California statewide assessment data with CDE, and copied student files.
Reports conflict
Timeline of what is known
- 01May 22 – September 18, 2026Unauthorized access
- 02September 25, 2026Breach discovered
- 03October 16, 2026Breach disclosed publicly
- 04October 2026Affected individuals notified
Dates come from the sources listed at the bottom of this page. Separate events are kept separate; where a date has not been disclosed, it says so.
What information was exposed?
The categories below come from Educational Testing Service (California Department of Education)'s disclosure and the sources listed on this page. Each is labeled by what the evidence supports. Categories not mentioned in any source are not listed, even if they are common in similar breaches.
Name
Student name (ETS/CDE notice).
Date of birth
Student date of birth (ETS/CDE notice).
Physical address
Student residential address (ETS/CDE notice).
Health information
Disability and Section 504 status, testing accommodations, and primary disability type (ETS/CDE notice).
Other personal information
School, district, grade level, statewide and local student identifiers, gender, race or ethnicity, primary language, country of origin, English learner status, program eligibility, and assessment results (ETS/CDE notice).
Why this information matters
The risks below are the ones associated with the categories of information involved in this breach. This describes how exposed information can be used in general. It does not state that any of this has happened with data from this incident.
Information from one breach can sometimes be combined with information from other breaches or public sources. A name and email address on their own are limited. Paired with a date of birth from one leak and an address from a people-search site, they become enough to answer a security question or make a scam call sound informed.
Whether the data from this breach has been sold, shared, or used is not known unless a source on this page says so. Where that is documented, it appears in the "What happened" section above.
If you were affected, consider doing these things now
Practical steps for this breach, in rough order of priority. None of these require buying anything. Monitoring services, including ours, are one option among several.
- 01Call 833-931-8488 with questions, and enroll in the complimentary monitoring using only the instructions in your notice or on www.cde.ca.gov/ets, by March 19, 2027.
- 02Parents and guardians can ask Equifax, Experian, and TransUnion for a free credit freeze for children under 16.
- 03Be cautious of emails, texts, or calls that mention a student's school, test results, or this incident; scammers can use student details to sound legitimate.
- 04Adults affected as former students can place a free credit freeze and check their credit reports at annualcreditreport.com.
AI Protection
Monitoring, alerts, and recovery help for what comes after a breach.
A breach puts information you can't take back into circulation. AI Protection watches for it being misused, alerts you when something changes, and helps you recover if something goes wrong. It cannot undo the breach or retrieve data an attacker already holds.
How one breach can contribute to a larger exposure footprint
A possible risk pattern, not a description of this incident. Each step is something that can happen after a breach. Nothing here states that it has happened with data from this incident.
Illustrative pattern- Step 1
One breach
A single company's records are accessed without authorization.
- Step 2
Personal information is exposed
Some categories can be changed afterward. Others, like a name or date of birth, can't.
- Step 3
It may remain accessible
Copies of breached data can persist well beyond the original incident.
- Step 4
Sources can be combined
Fragments from different breaches and public sources may be assembled into a fuller profile.
- Step 5
More targeted attempts
A fuller profile can make fraud, impersonation, phishing, or social engineering attempts more convincing.
A breach is an event. Exposure can last longer.
A password can be reset and a card reissued. Some information can't be replaced, and that is the part that stays useful to someone attempting fraud later. This does not mean fraud will occur. It means the risk does not close when the news cycle does.
Involved in this breach and hard to change
None of the categories reported in this breach are in the hard-to-change group. Changeable items like passwords and account numbers should still be addressed.
What Educational Testing Service (California Department of Education) has done so far
Only actions the company has announced or that are documented in the sources below. If something you'd expect to see isn't here, it hasn't been announced as of the last update.
Sources
Primary sources first: company disclosures, regulator and attorney general filings, SEC filings, court documents. News reporting is listed as secondary. Where reports conflict, the conflict is noted in the "What happened" section rather than resolved silently.
Last updated October 17, 2026 · First published October 17, 2026
Questions about the Educational Testing Service (California Department of Education) breach
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