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Confirmed breach · 3 breaches on record

Workers Compensation Insurance Rating Bureau of California data breach

USUnited States

Workers Compensation Insurance Rating Bureau of California (United States) notified the California Attorney General of a data breach on 21 February 2026. The breach began on 9 October 2025, 135 days before it was reported.

Breach reported 21 February 2026

Status
Confirmed breach
People affected
Not reported yet
Reported
21 February 2026
Breach began
9 October 2025
Time to tell
135 days (the median in California’s notices over the last year: 154 days)

What was exposed

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

What the letter says

We have not read this letter yet.

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

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

Sources

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

Breach reported 10 December 2025

Status
Confirmed breach
People affected
Not reported yet
Reported
10 December 2025
Breach began
7 October 2025
Time to tell
64 days (the median in California’s notices over the last year: 154 days)

What was exposed

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

Sources

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

Breach reported 13 October 2025

Status
Confirmed breach
People affected
Not reported yet
Reported
13 October 2025
Breach began
7 October 2025
Time to tell
6 days (the median in California’s notices over the last year: 154 days)

What was exposed

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

Sources

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

If Workers Compensation Insurance Rating Bureau of California had your data

  1. Look for Workers Compensation Insurance Rating Bureau of California’s own notice or letter: it should say what of yours was involved. Keep it.
  2. The register’s list does not say what was exposed; the notice it links to (under Sources) usually does. If Workers Compensation Insurance Rating Bureau of California has a password of yours, change it now to be safe.
  3. Expect scams that use your details: calls, texts or emails pretending to be Workers Compensation Insurance Rating Bureau of California, your bank or the police. Never give codes or passwords, never approve a sign-in you did not start, never move money.

One email to confirm first. We use your address only for this alert, and one click deletes it.

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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 · Found a mistake? Tell us and we correct it.