HackingFinancial ServicesFinanceStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDCriticalContained

HIGHTOWER HOLDING, LLC

bd_9ab4cb833accec1b · schema v1 · pii pii-v1

Severity

Critical

Discovered

Jan 9, 2026

Filed

Mar 24, 2026

To disclose

11 weeks

Affected · nationwide

131,4831,557 in this filing

Linked

9 filings

Confidence

65%

Full breach record for HIGHTOWER HOLDING, LLC →

Hightower Holding, LLC reported a data breach affecting 131,483 individuals, including 1,557 Maine residents. Unauthorized access occurred between Jan 8-9, 2026, via compromised user credentials. Exposed data included names, SSNs, and driver's license numbers. The company engaged forensic specialists, notified law enforcement, and provided 12 months of credit monitoring.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jan 9, 2026 → Filed with AG Mar 24, 202674d ⏱ ME AG >30d11 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 1 days

discovery → filing · 11 weeks / 74 days

Jan 8, 2026

Begins

Jan 9, 2026

Discovered

Mar 24, 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

Massachusetts State AGbd_cc7ac8b88135f6ba2026-03-24Verified
Texas State AGbd_6ed226a1f4fa64d62026-03-25 · +1dVerified
Vermont State AGbd_11c694a16108e78e2026-03-23 · +1dVerified
Washington State AGbd_618ac39ae73afd622026-03-23 · +1dCandidate

Show 4 more filings ↓up to 23d gap

New Hampshire State AGbd_63d000b1f7a591922026-03-23 · +1dVerified
Indiana State AGbd_79f3f287285213732026-03-23 · +1dVerified
Maine State AGbd_88f8377542b021452026-03-23 · +1dVerified
Illinois State AGbd_b618d47c063c96c42026-03-01 · +23dVerified

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

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

Discovered: Jan 9, 2026
Breach occurred: Jan 8, 2026 – Jan 9, 2026
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Mar 23, 2026
Affected individuals: 131,483state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified federal law enforcementProvided written notice to relevant state regulatorsNotified the three major credit reporting agencies
Initial access: valid_credentials

During the incident: Promptly 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 thorough review of the files
Notified federal law enforcement regarding the event
Provided access to credit monitoring and identity theft protection services for twelve (12) months through TransUnion
Provided written notice to relevant state regulators
Notified 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: 11 weeks(74 days from discovery to filing)
Compliance flags: ME AG >30d · 74dME resident >60d · 73dME CRA notice due
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jan 9, 2026
→ Filed with AG: Mar 24, 2026
74d 30 days (soft) ME AG >30d
Maine
Discovered: Jan 9, 2026
→ Notified: Mar 23, 2026
73d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jan 9, 2026 → Filed with AG: Mar 24, 2026	74d	30 days (soft)	ME AG >30d
Maine	Discovered: Jan 9, 2026 → Notified: Mar 23, 2026	73d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

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

New Hampshire State AG+22d

Indiana State AG+22d

Maine State AG+22d

Massachusetts State AG+23d

Maine State AG+23d · this page

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/6ec36d72-fc27-49a7-8883-1b4d7ece9e0d.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 24, 2026
Raw hash: b237658c83b4b32b54c3e89d4310c9bd11a41b90951e09d22637ee12bf53f626

Linked disclosures

Regulatory filings (8) · sorted by filing gap

Reporting entityHIGHTOWER HOLDING, LLC

Victim entityHIGHTOWER HOLDING, LLC

Incidentdiscovered Jan 9, 2026

Stated responsePromptly took steps to secure its network

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov