HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedIdentity (basic)MediumContained

CUSO Financial Services, L.P.

bd_af8d29e7a825abc2 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 10, 2024

Filed

Oct 28, 2024

To disclose

7 weeks

Affected · nationwide

75,11634 in this filing

Linked

9 filings

Confidence

65%

Full breach record for CUSO Financial Services, L.P. →5 incidents on file

CUSO Financial Services, LP reported an external system breach (hacking) involving unauthorized access to an employee account via a third-party archiving provider. The incident occurred between Dec 19, 2023, and Jan 19, 2024, and was discovered on Sep 10, 2024. Approximately 75,116 individuals were affected, including 34 Maine residents. Notification was sent on Oct 28, 2024.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Sep 10, 2024 → Filed with AG Oct 28, 202448d ⏱ ME AG >30d7 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 266 days

discovery → filing · 7 weeks / 48 days

Dec 19, 2023

Begins

Sep 10, 2024

Discovered

Oct 28, 2024

Filed

vs. sector median

2 wks faster

This filing is one of 9 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (8) · sorted by filing gap

California State AGbd_55bb67f5c342d2332024-10-28Verified
Oregon State AGbd_5f808b59a614fead2024-10-28Candidate
Massachusetts State AGbd_6c11ed7ee486cb072024-10-28Verified
Montana State AGbd_b7bc262cfb0f930a2024-10-28Verified by operator

Show 4 more filings ↓up to 4d gap

New Hampshire State AGbd_c148a7a23112a55a2024-10-28Verified
Washington State AGbd_c6c0f3798969948d2024-10-28Verified by operator
Indiana State AGbd_f79f964303bed0832024-10-28Verified
Massachusetts State AGbd_adef04a433aee23f2024-11-01 · +4dVerified

Name: CUSO Financial Services, L.P.
norm: cuso financial
Industry: Financial Services

Name: CUSO Financial Services, L.P.
norm: cuso financial
Industry: Financial Services
Industry: Financial Servicesllm

Discovered: Sep 10, 2024
Breach occurred: Dec 19, 2023 – Jan 19, 2024
Undetected for: 266 daysoccurrence → discovery
Materiality determined: —
Notification sent: Oct 28, 2024
Affected individuals: 75,116state + nationwide
Data types: Identity (basic)
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Regulator citations: Notified federal law enforcement
Initial access: valid_credentials

During the incident: Secured the affected account
Reset passwords
Engaged cybersecurity specialists to conduct a thorough investigation
Notified federal law enforcement
Changes made: Offering 12 months of complimentary monitoring and identity restoration services through Experian
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 7 weeks(48 days from discovery to filing)
Compliance flags: ME AG >30d · 48d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Sep 10, 2024
→ Filed with AG: Oct 28, 2024
48d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Sep 10, 2024 → Filed with AG: Oct 28, 2024	48d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 8 states

View merged incident ↗

California State AGOct 28 · first

Oregon State AGOct 28 · first

Massachusetts State AGOct 28 · first

Montana State AGOct 28 · first

New Hampshire State AGOct 28 · first

Washington State AGOct 28 · first

Indiana State AGOct 28 · first

Maine State AGOct 28 · first · this page

Massachusetts State AG+4d

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/823a72d2-6919-4a01-8733-f91bc2eb700c.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Oct 28, 2024
Raw hash: be820a337cfa85ab69372320b159943aefc076d26946dd7cf631017dc8a289bd

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityCUSO Financial Services, L.P.

Victim entityCUSO Financial Services, L.P.

Incidentdiscovered Sep 10, 2024

Stated responseSecured the affected account

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov