HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedDelayed DiscoveryGovernment IDIdentity (basic)Financial accountFinancialMediumContained

LPL FINANCIAL LLC

bd_ff0474e007c71f50 · schema v1 · pii pii-v2

Severity

Medium

Discovered

May 29, 2026

Filed

Sep 1, 2026

To disclose

—

Affected

Not disclosed

Confidence

69%

Full breach record for LPL FINANCIAL LLC →37 incidents on file

LPL Financial LLC notified Massachusetts residents of a security incident where an unauthorized third party accessed a financial advisor's device using remote access software between January 14, 2025, and May 29, 2026. The actor may have accessed an LPL portal containing client data, including names, SSNs, account numbers, and transaction history. LPL contained the incident, rotated credentials, and is offering 24 months of credit monitoring.

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Leak gap clock✗ Leak >180d

Incident timeline

undetected · 500 days

Jan 14, 2025

Begins

May 29, 2026

Discovered

Sep 1, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.ConfirmedView incident

A leak claim by cephalus about this victim predates this filing by 370 days.View originating leak claim

Name: LPL FINANCIAL LLC
norm: lpl financial
Domain: lplfinancial.com

Name: LPL FINANCIAL LLC
norm: lpl financial
Domain: lplfinancial.com
Industry: Financial Servicesllm

Discovered: May 29, 2026
Breach occurred: Jan 14, 2025 – May 29, 2026
Undetected for: 500 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 14, 2026
Affected individuals: Not disclosed
Data types: Government IDIdentity (basic)Financial accountFinancial
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Third party: via Financial Advisor
Initial access: external_remote_services

During the incident: Commenced an internal investigation
Contained and reviewed the affected device
Reviewed relevant account activity
Rotated credentials
Implemented additional technical measures to help prevent further unauthorized access
Working with law enforcement regarding the investigation
Disabled the advisor's LPL portal access and LPL email account
Changes made: Offering a complimentary 24-month membership for credit monitoring and identity theft protection services through Experian
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >180d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

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.mass.gov/doc/2026-1537-lpl-financial-llc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 1, 2026
Raw hash: a2be53cb80b197f8558fd7d70939ba5e96f19a25d8c834a818d8f2650cec2893

Reporting entityLPL FINANCIAL LLC

Victim entityLPL FINANCIAL LLC

Incidentdiscovered May 29, 2026

Stated responseCommenced an internal investigation

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov