HackingFinancial ServicesFinanceStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedGovernment IDIdentity (basic)MediumContained

AUTOMOBILE CLUB OF SOUTHERN CALIFORNIA

bd_5a1121510021516c · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 22, 2025

Filed

Mar 9, 2026

To disclose

7 weeks

Affected

3state residents only

Linked

5 filings

Confidence

66%

Full breach record for AUTOMOBILE CLUB OF SOUTHERN CALIFORNIA →

Automobile Club of Southern California (ACSC) notified the New Hampshire Attorney General of a security incident involving its vendor, DanubeNet, Inc. (DSS). Unauthorized access to DSS systems occurred between July 10, 2025, and August 19, 2025. ACSC determined on January 16, 2026, that member data was involved, specifically identifying records for three New Hampshire residents containing names and driver's permit/license numbers. ACSC mailed notifications on March 9, 2026, and offered one year of identity protection services.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 165 days

discovery → filing · 11 weeks / 77 days

Jul 10, 2025

Begins

Dec 22, 2025

Discovered

Mar 9, 2026

Filed

vs. sector median

2 wks faster

This filing is one of 5 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

California State AGbd_0a26f8a7e3b065f12026-03-09Candidate
Indiana State AGbd_0fd715fce2ab9f8d2026-03-09Verified
Massachusetts State AGbd_b9ba7f87febce0812026-03-09Candidate
California State AGbd_74b21c973de3198b2026-05-08 · +60dVerified

Name: AUTOMOBILE CLUB OF SOUTHERN CALIFORNIA
norm: automobile club of southern california

Name: AUTOMOBILE CLUB OF SOUTHERN CALIFORNIA
norm: automobile club of southern california
Industry: Financial Servicesllm

Discovered: Dec 22, 2025
Breach occurred: Jul 10, 2025 – Aug 19, 2025
Undetected for: 165 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 9, 2026
Affected individuals: 3state-resident count only
Data types: Government IDIdentity (basic)
Data elements: Social Security number
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1195 Supply Chain Compromise
Threat actor: External
Regulator citations: Notified New Hampshire Attorney General's Office
Third party: via DanubeNet, Inc.
Initial access: supply_chain

During the incident: Launched an investigation to determine what data related to ACSC, if any, may have been involved
Reviewed the files potentially involved
Mailed notification letters via United States Postal Service First-Class mail to the individuals whose information was involved
Established a dedicated call center for notice recipients to call with questions about the incident
Been in close contact with DSS to understand how the incident happened and the steps DSS has taken to address the incident and prevent future occurrences
Changes made: DSS has implemented additional measures to enhance their existing security protocols
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(52 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 4 states

View merged incident ↗

California State AGMar 9 · first

Indiana State AGMar 9 · first

Massachusetts State AGMar 9 · first

New Hampshire State AGMar 9 · first · this page

California State AG+60d

Pattern: first filing Mar 9 (CA), last May 8 (CA) — a 60-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://mm.nh.gov/files/uploads/doj/remote-docs/automobile-club-southern-california-20260309.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 9, 2026
Raw hash: 61e7fd60b0e04aaf3f5e392d8d2f6aaeca768ac331ee348c11a2fc3319fb74d3

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityAUTOMOBILE CLUB OF SOUTHERN CALIFORNIA

Victim entityAUTOMOBILE CLUB OF SOUTHERN CALIFORNIA

Incidentdiscovered Dec 22, 2025

Stated responseLaunched an investigation to determine what data related to ACSC, if any, may have been involved

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov