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Latest / California / September 2018

Mt. Diablo Unified School District

Mt. Diablo Unified School District notified California AG on Sep 7, 2018 of a data breach, which occurred on Aug 8, 2018.

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
Sep 7, 2018
Date(s) of breach
Wednesday, August 8, 2018
Residents affected
Not published by this source
Data exposed
Not stated in the source listing
Notice letter
Sample notice (PDF)
Days to notice
30 days from the end of the breach window (Aug 8, 2018, no discovery date in the letter) to the California record (Sep 7, 2018). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82).
First seen by BreachTally
2026-10-30 16:14 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 16:14 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.
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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 May 19, 2017 Not published Medical / health informationEmail addressPhone numberPostal address
MT. DIABLO UNIFIED SCHOOL DISTRICT California AG CA Dec 12, 2012 Not published Social Security numberUsernames / passwordsPostal addressName

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