HackingFinancial ServicesTechnologyFinanceStolen CredentialsData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDFinancial accountHighContained

SITUSAMC HOLDINGS CORPORATION

bd_28507ebc876b8c8d · schema v1 · pii pii-v2

Severity

High

Discovered

Nov 12, 2025

Filed

Mar 10, 2026

To disclose

17 weeks

Affected

1,340state residents only

Linked

17 filings

Confidence

65%

Full breach record for SITUSAMC HOLDINGS CORPORATION →

SitusAMC Holdings Corporation notified Montana residents of a data breach occurring between November 13-21, 2025, discovered on November 12, 2025. Unauthorized access resulted in the exfiltration of names, addresses, dates of birth, driver's license numbers, and financial account information. The company engaged third-party experts, notified law enforcement, and is offering 24 months of credit monitoring and identity theft protection services through IDX.

J jump to incidentP pin to compareR raw source

Incident timeline

Nov 13, 2025

Begins

Mar 10, 2026

Filed

vs. sector median

+8 wks slower

This filing is one of 17 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (10) · sorted by filing gap

Indiana State AGbd_70a785f4cf612d8c2026-03-10Verified
Indiana State AGbd_8485960cdfce7d6c2026-03-10Verified
California State AGbd_c52f9d050e7058e12026-03-10Verified
Oregon State AGbd_0cbe44e43d4d6e6f2026-03-23 · +13dVerified

Show 6 more filings ↓up to 27d gap

California State AGbd_6a4691fada8d391e2026-02-20 · +18dVerified
Washington State AGbd_7916a021a8a6b3d52026-02-20 · +18dVerified
California State AGbd_9fd5d288eb9921f42026-04-03 · +24dVerified
Maine State AGbd_e18d1724ef30fa6f2026-04-03 · +24dVerified
Texas State AGbd_4b06c2519a61551f2026-04-06 · +27dVerified
New Hampshire State AGbd_75b585487f6fa3562026-04-06 · +27dVerified

Showing first 10 of 16 linked disclosures.

Name: SITUSAMC HOLDINGS CORPORATION
norm: situsamc holdings
Domain: situsamc.com

Name: SITUSAMC HOLDINGS CORPORATION
norm: situsamc holdings
Domain: situsamc.com
Industry: Financial ServicesllmTechnologyllm

Discovered: Nov 12, 2025
Breach occurred: Nov 13, 2025 – Nov 21, 2025
Materiality determined: —
Notification sent: Mar 10, 2026
Affected individuals: 1,340state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: notified certain law enforcement and governmental authorities
Initial access: exploit_public_facing

During the incident: Commenced an investigation with the assistance of third-party experts
Notified certain law enforcement and governmental authorities
Began taking measures to assess and contain the incident
Took measures to further harden and enhance our security
Changes made: Offering identity theft protection services through IDX
24 Months of credit and CyberScan monitoring
$1,000,000 Insurance reimbursement policy
Fully managed ID theft recovery services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 17 weeks(118 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 11 filings · 8 states

View merged incident ↗

California State AGFeb 20 · first

Washington State AGFeb 20 · first

Indiana State AG+18d

California State AG+18d

Montana State AG+18d · this page

Oregon State AG+31d

California State AG+42d

Maine State AG+42d

Texas State AG+45d

New Hampshire State AG+45d

Pattern: first filing Feb 20 (CA), last Apr 6 (NH) — a 45-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Cascade drawn from the first 10 linked disclosures of 16 — the full spread may be wider.

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://dojmt.gov/wp-content/uploads/2026/08/Consumer-notification-letter-4.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 10, 2026
Raw hash: 79bb6376db3cc2e876b1a81abd8602ac4fbe77760bd171b5b946e0f6489588e9

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entitySITUSAMC HOLDINGS CORPORATION

Victim entitySITUSAMC HOLDINGS CORPORATION

Incidentdiscovered Nov 12, 2025

Stated responseCommenced an investigation with the assistance of third-party experts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov