Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsCustomer Data InvolvedTargetedPIIIdentity (basic)LowContained

Cumberland Advisors, LLC

bd_27f60e7defb708fc · schema v1 · pii pii-v1

Severity

Low

Discovered

Sep 5, 2023

Filed

Dec 20, 2023

To disclose

15 weeks

Affected

5state residents only

Linked

6 filings

Confidence

65%

Full breach record for Cumberland Advisors, LLC →

Cumberland Advisors, Inc. notified individuals of unauthorized access to two employee email accounts between August 31 and September 5, 2023. The breach was discovered on September 5, 2023, following suspicious activity. Customer PII was accessed. The company engaged forensic specialists, enhanced security protocols, and offered credit monitoring services.

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Incident timeline

undetected · 5 days

discovery → filing · 15 weeks / 106 days

Aug 31, 2023

Begins

Sep 5, 2023

Discovered

Dec 20, 2023

Filed

vs. sector median

+7 wks slower

This filing is one of 6 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Maine State AGbd_59e92d07c3db90cf2023-12-20Verified
Vermont State AGbd_70f1d52df37b37f82023-12-20Verified
Massachusetts State AGbd_838e5ce538017ce12023-12-20Verified
New Hampshire State AGbd_6ab5b3b9d1b51cd82024-02-14 · +56dVerified

Show 1 more filing ↓up to 56d gap

Maine State AGbd_e75969bf74119acf2024-02-14 · +56dCandidate

Name: Cumberland Advisors, LLC
norm: cumberland advisors

Name: Cumberland Advisors, LLC
norm: cumberland advisors
Industry: Financial Servicesllm

Discovered: Sep 5, 2023
Breach occurred: Aug 31, 2023 – Sep 5, 2023
Undetected for: 5 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 20, 2023
Affected individuals: 5state-resident count only
Data types: PIIIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Launched an investigation with the assistance of third-party forensic specialists
Undertook a comprehensive and time-intensive review of the contents of the email accounts
Enhanced existing security protocols
Evaluating policies and procedures related to data privacy and security
Offering complimentary credit monitoring and identity protection services through Experian
Changes made: Enhanced existing security protocols
Evaluating policies and procedures related to data privacy and security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 15 weeks(106 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 5 states

View merged incident ↗

Maine State AGDec 20 · first

Vermont State AGDec 20 · first

Massachusetts State AGDec 20 · first

Montana State AGDec 20 · first · this page

New Hampshire State AG+56d

Maine State AG+56d

Pattern: first filing Dec 20 (ME), last Feb 14 (ME) — a 56-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://dojmt.gov/wp-content/uploads/OCP/Consumer-notification-letter-962.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Dec 20, 2023
Raw hash: 41c998f7ce2ab6cdd4bd5a1a7bbced2efb93b003ba85672464cbd21be8f5e5bb

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityCumberland Advisors, LLC

Victim entityCumberland Advisors, LLC

Incidentdiscovered Sep 5, 2023

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov