HackingFinancial ServicesFinanceStolen CredentialsData ExfiltratedCustomer Data InvolvedMulti-Stage ChainIdentity (basic)Government IDFinancial accountMediumContained

HIGHTOWER HOLDING, LLC

bd_63d000b1f7a59192 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 9, 2026

Filed

Mar 23, 2026

To disclose

10 weeks

Affected

975state residents only

Linked

9 filings

Confidence

66%

Full breach record for HIGHTOWER HOLDING, LLC →

Hightower Holding, LLC notified the New Hampshire Attorney General of two unauthorized access incidents involving compromised user credentials. The first occurred Jan 8-9, 2026; the second Jan 19-20, 2026. Files containing names, SSNs, driver's license numbers, and financial account info were downloaded. 975 NH residents were notified on March 23, 2026. The company engaged forensic specialists, notified law enforcement, and provided 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

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
Washington State AGbd_618ac39ae73afd622026-03-23Candidate
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: 975state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified New Hampshire Attorney General Consumer Protection & Antitrust BureauNotified three major credit reporting agencies (Equifax, Experian, and TransUnion)
Initial access: valid_credentials

During the incident: Engaged third-party cybersecurity and digital forensic specialists
Secured its network
Engaged third-party data review specialists
Notified federal law enforcement
Provided written notice to impacted individuals
Provided access to credit monitoring and identity theft protection services for twelve (12) months through 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: — (clock not assessable for this source)

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

Washington State AG+22d

Indiana State AG+22d

Maine State AG+22d

New Hampshire 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://mm.nh.gov/files/uploads/doj/remote-docs/hightower-holding-20260323.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: 0661cd4eb9c5532a5f68f3f2c7e58ef865eaf1f32a34594f2c3938477b651dd4

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityHIGHTOWER HOLDING, LLC

Victim entityHIGHTOWER HOLDING, LLC

Incidentdiscovered Jan 9, 2026

Stated responseEngaged third-party cybersecurity and digital forensic specialists

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov