HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedPIIIdentity (basic)LowContained

Cardinal Services

bd_cb7cdf284827fc90 · schema v1 · pii pii-v2

Severity

Low

Discovered

Jun 30, 2025

Filed

May 20, 2026

To disclose

46 weeks

Affected

252state residents only

Linked

13 records

Confidence

67%

Full breach record for Cardinal Services →

Cardinal Services, Inc. notified Montana residents of unauthorized access to its systems occurring between June 25-26, 2025, and around August 8, 2025. The company became aware of the incident on or around June 30, 2025. Personal information, including full names, was accessed. Cardinal engaged external cybersecurity professionals, secured its environment, and is offering complimentary credit monitoring through Epiq Privacy Solutions.

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Leak gap clock✗ Leak >180d46 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 5 days

discovery → filing · 46 weeks / 324 days

Jun 25, 2025

Begins

Jun 30, 2025

Discovered

May 20, 2026

Filed

vs. sector median

+27 wks slower

This filing is one of 13 records about the same incident.View merged incident

A leak claim by rhysida about this victim was first seen 309 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Maine State AGbd_00d73c1588b546a92026-05-20Verified by operator
Vermont State AGbd_10fd00d93b5c10492026-05-20Verified
California State AGbd_6193fc40e2330bf52026-05-20Verified by operator
Washington State AGbd_aa2abd061d19d40b2026-05-20Verified

Show 6 more filings ↓up to 7d gap

Massachusetts State AGbd_b0de62b8dcc4f4e12026-05-20Verified by operator
Indiana State AGbd_b8b3a9190c8646192026-05-20Verified
Nebraska State AGbd_d631d3ca160719f92026-05-20Verified by operator
Texas State AGbd_c3ccb041077247c72026-05-22 · +2dVerified by operator
New Hampshire State AGbd_3fa3a4994a4ee2282026-05-26 · +6dVerified by operator
Oregon State AGbd_758bd2f1d1e91ee42026-05-27 · +7dVerified by operator

Showing first 10 of 12 linked disclosures.

Name: Cardinal Services
norm: cardinal services
Domain: cardinal-services.com

Name: Cardinal Services
norm: cardinal services
Domain: cardinal-services.com
Industry: Professional Servicesllm

Discovered: Jun 30, 2025
Breach occurred: Jun 25, 2025 – Jun 26, 2025
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: —
Affected individuals: 252state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Initial access: exploit_public_facing

During the incident: Commenced an investigation into the incident
Worked with external cyber security professionals
Secured its internal environment
Offering complimentary access to Epiq Privacy Solutions ID
Changes made: Continually evaluate and modify its practices and internal controls to enhance the security and privacy of your personal information
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 46 weeks(324 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 11 states

View merged incident ↗

Maine State AGMay 20 · first

Vermont State AGMay 20 · first

California State AGMay 20 · first

Washington State AGMay 20 · first

Massachusetts State AGMay 20 · first

Indiana State AGMay 20 · first

Nebraska State AGMay 20 · first

Montana State AGMay 20 · first · this page

Texas State AG+2d

New Hampshire State AG+6d

Oregon State AG+7d

Pattern: first filing May 20 (ME), last May 27 (OR) — a 7-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 12 — the full spread may be wider.

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://dojmt.gov/wp-content/uploads/2026/09/Consumer-notification-letter-31.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 20, 2026
Raw hash: 70ec0f04fc10c4b6736b3943ed596bc887b5737a1a21cf84a621d92db82fe1d4

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entityCardinal Services

Victim entityCardinal Services

Incidentdiscovered Jun 30, 2025

Stated responseCommenced an investigation into the incident

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancedojmt.gov