LatestStatesCompaniesPricingAPIData Start free trial

Latest / California / December 2012

MT. DIABLO UNIFIED SCHOOL DISTRICT

MT. DIABLO UNIFIED SCHOOL DISTRICT notified California AG on Dec 12, 2012 of a data breach, which occurred on Dec 1, 2012. Data exposed: Social Security number, Usernames / passwords, Postal address, Name.

All 4 filings by MT. DIABLO UNIFIED SCHOOL DISTRICT, state by state · Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization
MT. DIABLO UNIFIED SCHOOL DISTRICT
Source
California AG · source record
Date reported
Dec 12, 2012
Date(s) of breach
Saturday, December 1, 2012
Residents affected
Not published by this source
Data exposed
Social Security number Usernames / passwords Postal address Name
Notice letter
Sample notice (PDF)
Days to notice
11 days from the end of the breach window (Dec 1, 2012, no discovery date in the letter) to the California record (Dec 12, 2012). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
Offered in the letter
12 months of credit or identity monitoring through Experian
First seen by BreachTally
2026-10-30 16:25 UTC

Dates and counts as filed by the organization with the agency. The breach window and the report date often differ by months.

First seen by BreachTally at 16:25 UTC on Oct 30, 2026. New filings reach paid subscribers within 30 minutes of the agency posting, with the count, the data exposed and the letter. Start a 14-day free trial. We email you two days before the first charge and you cancel in one click.
Not today? Take the free Monday digest: the week's filings by state and the largest by people affected. Once a week.

Other filings by MT. DIABLO UNIFIED SCHOOL DISTRICT

OrganizationSourceStateReportedResidents affectedData exposed
Mt. Diablo Unified School District California AG CA Jun 11, 2020 Not published In the letter (PDF)
Mt. Diablo Unified School District California AG CA Sep 7, 2018 Not published In the letter (PDF)
Mt. Diablo Unified School District California AG CA May 19, 2017 Not published Medical / health informationEmail addressPhone numberPostal address

Data reproduced from a public government filing. Spot an error? Email support@breachtally.com with the record link. Corrections are applied and noted.