HackingTransportation & LogisticsTransportationData ExfiltratedEmployee Data InvolvedIdentity (basic)Government IDFinancial accountHealth (basic)PHIMediumActive

Santa Clara Valley Transportation Authority

bd_4e052fda57651005 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 17, 2021

Filed

Aug 23, 2021

To disclose

18 weeks

Affected

Not disclosed

Confidence

65%

Full breach record for Santa Clara Valley Transportation Authority →2 incidents on file

Santa Clara Valley Transportation Authority (VTA) notified employees of a data breach where an unknown actor accessed systems between March 25 and April 17, 2021. VTA discovered inaccessible systems on April 17, 2021. Employee data including names, addresses, SSNs, bank account info, and medical/health insurance information may have been exfiltrated. VTA engaged forensic specialists and law enforcement, and offered 12 months of identity monitoring via Experian. The investigation is ongoing.

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Incident timeline

undetected · 23 days

discovery → filing · 18 weeks / 128 days

Mar 25, 2021

Begins

Apr 17, 2021

Discovered

Aug 23, 2021

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

Name: Santa Clara Valley Transportation Authority
norm: santa clara valley transportation authority

Name: Santa Clara Valley Transportation Authority
norm: santa clara valley transportation authority
Industry: Transportation & Logisticsllm

Discovered: Apr 17, 2021
Breach occurred: Mar 25, 2021 – Apr 17, 2021
Undetected for: 23 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 23, 2021
Affected individuals: Not disclosed
Data types: Identity (basic)Government IDFinancial accountHealth (basic)PHI
Data elements: Social Security numberMedical information
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified law enforcement

During the incident: Launched an investigation with the assistance of third-party forensic specialists
Notified law enforcement
Arranged to have Experian provide identity monitoring services for 12 months at no cost
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 18 weeks(128 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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/sb24-544173
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 23, 2021
Raw hash: c18776c949ded250ee4174e178fc6c1428afcbe1c21dd21a6f1f64ca627d648e

Reporting entitySanta Clara Valley Transportation Authority

Victim entitySanta Clara Valley Transportation Authority

Incidentdiscovered Apr 17, 2021

Stated responseLaunched an investigation with the assistance of third-party forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov