HackingTransportation & LogisticsTransportationCustomer Data InvolvedIdentity (basic)Government IDHealth (basic)MediumContained

Central Contra Costa Transit Authority

bd_ec1a71ef85291e33 · schema v1 · pii pii-v1

Severity

Medium

Discovered

May 5, 2024

Filed

Jul 15, 2024

To disclose

10 weeks

Affected

Not disclosed

Linked

4 filings

Confidence

65%

Full breach record for Central Contra Costa Transit Authority →

Central Contra Costa Transit Authority (CCCTA) notified the California Attorney General of a data breach discovered on May 5, 2024. An unauthorized actor accessed files containing names, Social Security numbers, driver's license numbers, and limited medical information. CCCTA engaged a cybersecurity firm, secured its network, and is offering 12 months of credit monitoring and fraud assistance to affected individuals.

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Incident timeline

discovery → filing · 10 weeks / 71 days

May 5, 2024

Begins

May 5, 2024

Discovered

Jul 15, 2024

Filed

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Indiana State AGbd_154a51d1ebd68c522024-07-15Verified
Montana State AGbd_5fde03fc48d06fdb2024-07-15Candidate
New Hampshire State AGbd_8ba961c19877df502024-07-15Verified

Name: Central Contra Costa Transit Authority
norm: central contra costa transit authority

Name: Central Contra Costa Transit Authority
norm: central contra costa transit authority
Industry: Transportation & Logisticsllm

Discovered: May 5, 2024
Breach occurred: May 5, 2024
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 15, 2024
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDHealth (basic)
Attack vector: Unknown
Threat actor: External

During the incident: Took steps to secure its network
Engaged a specialized cybersecurity firm to investigate the incident’s nature and scope
Undertook a time-consuming and detailed review of the data stored on the servers
Providing access to Single Bureau Credit Monitoring/Single Bureau Credit Report/Single Bureau Credit Score services at no charge
Providing proactive fraud assistance
Changes made: Plan to enhance the security of our systems moving forward
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 10 weeks(71 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Indiana State AGJul 15 · first

Montana State AGJul 15 · first

New Hampshire State AGJul 15 · first

California State AGJul 15 · first · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://oag.ca.gov/ecrime/databreach/reports/sb24-588634
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 15, 2024
Raw hash: 2321bc898cb4dc5bc6474578bad93b127da8d3c09df0982771d337aaf7fba087

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityCentral Contra Costa Transit Authority

Victim entityCentral Contra Costa Transit Authority

Incidentdiscovered May 5, 2024

Stated responseTook steps to secure its network

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov