Social EngineeringFinancial ServicesFinancePhishingStolen CredentialsCustomer Data InvolvedMulti-Stage ChainPIIIdentity (basic)Government IDMediumContained

Cumberland Advisors, LLC

bd_6ab5b3b9d1b51cd8 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 5, 2023

Filed

Feb 14, 2024

To disclose

23 weeks

Affected

30state residents only

Linked

6 filings

Confidence

65%

Full breach record for Cumberland Advisors, LLC →

Cumberland Advisors, Inc. reported a phishing incident where unauthorized access to two employee email accounts occurred between August 31 and September 5, 2023. The breach was discovered on September 5, 2023. The incident potentially exposed personal information of 30 New Hampshire residents. Cumberland engaged forensic specialists, notified law enforcement, and provided one year of credit monitoring via Experian to affected individuals.

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Incident timeline

undetected · 5 days

discovery → filing · 23 weeks / 162 days

Aug 31, 2023

Begins

Sep 5, 2023

Discovered

Nov 20, 2023

Scope determined

Feb 14, 2024

Filed

vs. sector median

+15 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_e75969bf74119acf2024-02-14Candidate
Montana State AGbd_27f60e7defb708fc2023-12-20 · +56dCandidate
Maine State AGbd_59e92d07c3db90cf2023-12-20 · +56dVerified
Vermont State AGbd_70f1d52df37b37f82023-12-20 · +56dVerified

Show 1 more filing ↓up to 56d gap

Massachusetts State AGbd_838e5ce538017ce12023-12-20 · +56dVerified

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: Nov 20, 2023
Notification sent: Dec 20, 2023
Affected individuals: 30state-resident count only
Data types: PIIIdentity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid AccountsT1114 Email Collection
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementProvided written notice to relevant state regulators
Initial access: phishing_link

During the incident: Launched an investigation, with the assistance of third-party forensic specialists
Notified federal law enforcement
Implemented additional safeguards
Providing individuals whose personal information was potentially affected by this incident access to credit monitoring services for one (1) year through Experian
Providing written notice of this incident to relevant state regulators and to the three major consumer credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Implemented additional safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 23 weeks(162 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 ↗

Montana State AGDec 20 · first

Maine State AGDec 20 · first

Vermont State AGDec 20 · first

Massachusetts State AGDec 20 · first

Maine State AG+56d

New Hampshire State AG+56d · this page

Pattern: first filing Dec 20 (MT), last Feb 14 (NH) — 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://mm.nh.gov/files/uploads/doj/remote-docs/cumberland-advisors-20240214.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Feb 14, 2024
Raw hash: 69d8218a6bc6f79b6e993bcd1cc19375153e7955494a45ac3da293c70ff6bbc7

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 provenancemm.nh.gov