HackingFinancial ServicesFinanceStolen CredentialsCapture Stored DataData ExfiltratedCustomer Data InvolvedMulti-Stage ChainIdentity (basic)Government IDFinancial accountHighContained

HIGHTOWER HOLDING, LLC

bd_618ac39ae73afd62 · schema v1 · pii pii-v1

Severity

High

Discovered

Jan 9, 2026

Filed

Mar 23, 2026

To disclose

10 weeks

Affected

7,528state residents only

Linked

9 filings

Confidence

69%

Full breach record for HIGHTOWER HOLDING, LLC →

Hightower Holding, LLC reported unauthorized access to Washington residents' data via compromised credentials. Two incidents occurred Jan 8-9 and Jan 19-20, 2026, resulting in the download of files containing names, SSNs, driver's licenses, DOBs, and financial account info. 7,528 residents notified on March 23, 2026. Response included forensic investigation, law enforcement notification, and 12-month credit monitoring.

J jump to incidentP pin to compareR raw source

Washington clock⏱ WA AG >30d10 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 10 weeks / 73 days

Jan 8, 2026

Begins

Jan 9, 2026

Discovered

Mar 23, 2026

Filed

vs. sector median

+2 wks slower

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

Vermont State AGbd_11c694a16108e78e2026-03-23Verified
New Hampshire State AGbd_63d000b1f7a591922026-03-23Verified
Indiana State AGbd_79f3f287285213732026-03-23Verified
Maine State AGbd_88f8377542b021452026-03-23Verified

Show 4 more filings ↓up to 22d gap

Maine State AGbd_9ab4cb833accec1b2026-03-24 · +1dVerified
Massachusetts State AGbd_cc7ac8b88135f6ba2026-03-24 · +1dVerified
Texas State AGbd_6ed226a1f4fa64d62026-03-25 · +2dVerified
Illinois State AGbd_b618d47c063c96c42026-03-01 · +22dVerified

Name: HIGHTOWER HOLDING, LLC
norm: hightower holding
Domain: hightoweradvisors.com

Name: HIGHTOWER HOLDING, LLC
norm: hightower holding
Domain: hightoweradvisors.com
Industry: Financial Servicesllm

Discovered: Jan 9, 2026
Breach occurred: Jan 8, 2026 – Jan 20, 2026
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Mar 23, 2026
Affected individuals: 7,528state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: NameSocial Security numberDriver's licence numberFinancial account numberDate of birth
WA-stated cause: Unauthorized Access
WA-stated duration: lifecycle 1-99dexposure 1-99d
WA-stated discovery: Found while ongoing
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1119 Automated Collection
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcement regarding the eventsProvided written notice of this incident to relevant state regulators
Initial access: valid_credentials

During the incident: Took steps to secure its network
Initiated a comprehensive investigation with the assistance of third-party cybersecurity and digital forensic specialists
Engaged third-party data review specialists to conduct a time-intensive and thorough review of the files
Notified federal law enforcement regarding the events
Provided access to credit monitoring and identity theft protection services for twelve (12) months through TransUnion
Provided written notice of this incident to relevant state regulators
Provided written notice to the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Undertook additional measures to further strengthen its cybersecurity posture even with respect to credentialed users
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 10 weeks(73 days from discovery to filing)
Compliance flags: WA AG >30d
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.

Filing propagation · 9 filings · 8 states

View merged incident ↗

Illinois State AGMar 1 · first

Vermont State AG+22d

New Hampshire State AG+22d

Indiana State AG+22d

Maine State AG+22d

Washington State AG+22d · this page

Maine State AG+23d

Massachusetts State AG+23d

Texas State AG+24d

Pattern: first filing Mar 1 (IL), last Mar 25 (TX) — a 24-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://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA37362.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 23, 2026
Raw hash: 3b07979d83a452df14d8f8dca035360f9d8295e9e820167ae554503f1bd9b0e7

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityHIGHTOWER HOLDING, LLC

Victim entityHIGHTOWER HOLDING, LLC

Incidentdiscovered Jan 9, 2026

Stated responseTook steps to secure its network

ComplianceWA AG >30d

Extraction provenanceno artifact recorded

Source provenanceagportal-s3bucket.s3.amazonaws.com