San Mateo County Transit District

San Mateo County Transit District notified California AG on May 23, 2022 of a data breach, which occurred on Jun 2, 2021. Data exposed: Email address, Name.

Case file (dates, days to notice against the statute, what the letter offers, prior incidents)

Organization: San Mateo County Transit District
Source: California AG · source record
Date reported: May 23, 2022
Date(s) of breach: Wednesday, June 2, 2021
Residents affected: Not published by this source
Data exposed: Email address Name
Notice letter: Sample notice (PDF)
Discovered: Jun 2, 2021, as stated in the letter
"On June 2, 2021, SMCTD learned of unusual activity involving our email environment."
Days to notice: 355 days from discovery (Jun 2, 2021) to the California record (May 23, 2022). Statute: 30 days from discovery or notification of the breach (Cal. Civ. Code § 1798.82). Over the statutory period
Offered in the letter: credit or identity monitoring through Experian
First seen by BreachTally: 2026-10-30 16:02 UTC

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

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