Privacy Unpacked

Confirmed breach

Yu Ming Charter School data breach

USUnited States · Education

Yu Ming Charter School (United States) notified the California Attorney General of a data breach on 4 November 2026.

One of 3 organisations whose data was taken through Educational Testing Service. The Educational Testing Service breach →

People affected
Not reportedno count given yet
Reported
4 November 2026Official notice
Time to tell
166 daysfrom 22 May 2026 · the median is 147
Found to notice
40 days (found 25 September 2026, by the company’s letter)

What was exposed

The register’s list does not say what was exposed; the notice it links to (under Sources) usually does.

How it happened

How
Stolen password or login an unauthorized party used a compromised login credential at various times during the period from May 22, 2026 to September 18, 2026 to access the SFTP site to copy files source
Through
Educational Testing Service (ETS) Educational Testing Service (ETS), at the direction of the California Department of Education (CDE), is notifying California students and families about a data security incident involving unauthorized access to and copying of student data from an ETS secure file transfer protocol (SFTP) site source · 3 organisations hit through Educational Testing Service →

What the letter says

Found
On September 25, 2026, ETS identified unauthorized activity involving an SFTP site
Began
an unauthorized party used a compromised login credential at various times during the period from May 22, 2026 to September 18, 2026
At
Educational Testing Service (ETS), at the direction of the California Department of Education (CDE), is notifying California students and families about a data security incident involving unauthorized access to and copying of student data from an ETS secure file transfer protocol (SFTP) site
Offered
ETS is providing complimentary identity-protection services through Experian IdentityWorks for 2 years

Got a letter or email about this breach? Check it is real →

Read the letter (PDF), as filed with the California Attorney General.

Sources 1

Official notices are read by code from the regulator’s own register. More notices to California. · Corrections and changes

Questions about the Yu Ming Charter School breach

Was Yu Ming Charter School hacked?

Yu Ming Charter School (United States) notified the California Attorney General of a data breach on 4 November 2026. How it happened, by the sources: stolen credentials, through Educational Testing Service (ETS).

What data was exposed in the Yu Ming Charter School breach?

The notices and reports so far do not say what was exposed. This page is updated when they do.

How do I know if I was affected?

Organisations normally tell the people whose data was involved, by letter or email, and that notice says what of yours was in it. The letter it filed is on this page. We cannot look up individual people. If you got a notice, check that it is real, then follow the steps on this page.

Is there a Yu Ming Charter School data breach settlement?

No settlement open for claims is on record for Yu Ming Charter School as of 15 November 2026. A settlement usually comes a year or more after a breach, if a court approves one. Every open settlement is listed with its deadline.

Is a letter, email or text about the Yu Ming Charter School breach real or a scam?

A real notice names the breach, says what data was involved and never asks for a password, a code or a payment. Criminals often send fake notices after a breach is in the news. Do not use links or phone numbers in the message: go to Yu Ming Charter School’s own site, or check the letter here.

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Every breach in United States →

Data breach settlements open for claims

Not about Yu Ming Charter School: settlements over other US data breaches that people can still claim money from.

Every open settlement →

From the data breach tracker: official notices, breach databases and the news, every fact with its source. Open data (CC BY 4.0) · How the tracker works · Official registers · Corrections and changes · Accuracy audit · For journalists · Found a mistake? Tell us and we correct it.