Social EngineeringProfessional ServicesProfessional ServicesPhishingData ExfiltratedCustomer Data InvolvedGovernment IDIdentity (basic)MediumContained

Upstream Advisory Group LLC

bd_b952c8d478e7a588 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Aug 19, 2025

Filed

Sep 18, 2025

To disclose

—

Affected

1state residents only

Linked

4 filings

Confidence

66%

Full breach record for Upstream Advisory Group LLC →

Upstream Advisory Group LLC reported a phishing incident involving one employee email account. Unauthorized access occurred between May 21 and May 28, 2025. On August 19, 2025, the company determined one Nebraska resident's name and Social Security Number were accessed. A notification letter was mailed on September 18, 2025, offering one year of credit monitoring.

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Incident timeline

undetected · 90 days

May 21, 2025

Begins

Aug 19, 2025

Discovered

Sep 18, 2025

Filed

This filing is one of 4 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (3) · sorted by filing gap

Maine State AGbd_1e586aadde8286ea2025-09-18Candidate
Indiana State AGbd_b813ceb731076d2b2025-09-18Verified
Massachusetts State AGbd_bb835b33e5256f892025-09-18Verified

Name: Upstream Advisory Group LLC
norm: upstream advisory

Name: Upstream Advisory Group LLC
norm: upstream advisory
Industry: Professional Servicesllm

Discovered: Aug 19, 2025
Breach occurred: May 21, 2025 – May 28, 2025
Undetected for: 90 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 18, 2025
Affected individuals: 1state-resident count only
Data types: Government IDIdentity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: External
Initial access: phishing_link

During the incident: Secured the email account
Launched an investigation with the help of a cybersecurity firm
Reviewed all emails and attachments stored in the email account
Mailed a notification letter to the Nebraska individual
Offered a complimentary one-year membership to credit monitoring services
Changes made: Taken steps to enhance already existing security measures
Implemented additional measures to enhance our existing security protocols
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 4 filings · 4 states

View merged incident ↗

Maine State AGSep 18 · first

Indiana State AGSep 18 · first

Massachusetts State AGSep 18 · first

Nebraska State AGSep 18 · first · this page

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://nebraska.gov/ago/data-breach/documents/ed443745-076e-47b4-b346-2bdbd54e65d9.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 18, 2025
Raw hash: 0f1390d39b12d417d5ca37799f803f9cc48e2d611e170858ac85e4a93d7028fe

Linked disclosures

Regulatory filings (3) · sorted by filing gap

Reporting entityUpstream Advisory Group LLC

Victim entityUpstream Advisory Group LLC

Incidentdiscovered Aug 19, 2025

Stated responseSecured the email account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancenebraska.gov