HackingFinancial ServicesTechnologyFinanceCustomer Data InvolvedTargetedIdentity (basic)Government IDFinancial accountMediumContained

SITUSAMC HOLDINGS CORPORATION

bd_e18d1724ef30fa6f · schema v1 · pii pii-v1

Severity

Medium

Discovered

Mar 5, 2026

Filed

Apr 3, 2026

To disclose

29 days

Affected

40state residents only

Linked

17 filings

Confidence

66%

Full breach record for SITUSAMC HOLDINGS CORPORATION →

SitusAMC Holdings Corporation experienced an external system breach (hacking) between Nov 13-21, 2025. Unauthorized access resulted in the exposure of names, addresses, DOBs, government IDs, and financial account info. 40 Maine residents were affected. Notices sent March 10, 2026, offering 24 months of IDX identity protection.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Mar 5, 2026 → Filed with AG Apr 3, 202629d ✓ ME AG ≤30d29 days discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 112 days

discovery → filing · 29 days

Nov 13, 2025

Begins

Mar 5, 2026

Discovered

Apr 3, 2026

Filed

vs. sector median

4 wks faster

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

California State AGbd_9fd5d288eb9921f42026-04-03Verified
Texas State AGbd_4b06c2519a61551f2026-04-06 · +3dVerified
New Hampshire State AGbd_75b585487f6fa3562026-04-06 · +3dVerified
Oregon State AGbd_0cbe44e43d4d6e6f2026-03-23 · +11dVerified

Show 6 more filings ↓up to 42d gap

Montana State AGbd_28507ebc876b8c8d2026-03-10 · +24dVerified
Indiana State AGbd_70a785f4cf612d8c2026-03-10 · +24dVerified
Indiana State AGbd_8485960cdfce7d6c2026-03-10 · +24dVerified
California State AGbd_c52f9d050e7058e12026-03-10 · +24dVerified
California State AGbd_6a4691fada8d391e2026-02-20 · +42dVerified
Washington State AGbd_7916a021a8a6b3d52026-02-20 · +42dVerified

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: Mar 5, 2026
Breach occurred: Nov 13, 2025 – Nov 21, 2025
Undetected for: 112 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 10, 2026
Affected individuals: 40state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified Maine Attorney General
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
Offering identity theft protection services through IDX
Changes made: Took measures to further harden and enhance our security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 29 days(29 days from discovery to filing)
Compliance flags: ME AG ≤30d · 29d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Mar 5, 2026
→ Filed with AG: Apr 3, 2026
29d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Mar 5, 2026 → Filed with AG: Apr 3, 2026	29d	30 days	ME AG ≤30d

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

Montana State AG+18d

Indiana State AG+18d

California State AG+18d

Oregon State AG+31d

California State AG+42d

Maine State AG+42d · this page

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/88b91f43-8200-4cc0-8005-0177c766d965.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 3, 2026
Raw hash: ee35cdf02dd566c95f4244922bcc0ccef5851c81a27180e1f5fc5a0e87bfb1bd

Linked disclosures

Regulatory filings (10) · sorted by filing gap

Reporting entitySITUSAMC HOLDINGS CORPORATION

Victim entitySITUSAMC HOLDINGS CORPORATION

Incidentdiscovered Mar 5, 2026

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

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov