Alameda-Contra Costa Transit District
bd_948719381df6f556 · schema v1 · pii pii-v1
Full breach record for Alameda-Contra Costa Transit District →Alameda-Contra Costa Transit District (AC Transit) notified customers that unauthorized access occurred to a limited number of employee email accounts between April 7, 2020, and June 16, 2020. The investigation, completed around January 4, 2021, determined that some customer personal information, including names, was contained in the affected emails. AC Transit reset credentials, engaged forensic investigators, and is enhancing security protocols and staff training. Complimentary identity protection services were offered.
J jump to incidentP pin to compareR raw source
Incident timeline
Apr 7, 2020
Begins
Jun 16, 2020
Discovered
Mar 15, 2021
Filed
Linked disclosures
Why this link?Regulatory filings (4) · sorted by filing gap
- Massachusetts State AGbd_958292882fafd8712021-03-15Verified
- Maine State AGbd_9d023167638599a62021-03-15Candidate
- Montana State AGbd_1496dfeb74794abb2021-03-11 · +4dCandidate
- Indiana State AGbd_e3a36108977257f02021-03-11 · +4dVerified
Filing propagation · 5 filings · 5 states
View merged incident ↗Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.