HackingProfessional ServicesProfessional ServicesVulnerability ExploitCapture Stored DataData ExfiltratedTargetedIdentity (basic)Government IDFinancial accountEmploymentMediumContained

Stoss Landscape Urbanism

bd_41659a1b5e2aac21 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Oct 10, 2025

Filed

Jan 9, 2026

To disclose

13 weeks

Affected · nationwide

771 in this filing

Linked

4 filings

Confidence

66%

Full breach record for Stoss Landscape Urbanism →

Stoss Landscape Urbanism reported an external system breach (hacking) on September 14, 2025, discovered on October 10, 2025. The incident affected 77 individuals, including 1 Maine resident. Compromised data included names, SSNs, bank information, passport info, and employment records. The company engaged external cybersecurity experts, notified law enforcement, and offered 24 months of Experian IdentityWorks.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Oct 10, 2025 → Filed with AG Jan 9, 202691d ✗ ME AG >90d13 weeks 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 · 26 days

discovery → filing · 13 weeks / 91 days

Sep 14, 2025

Begins

Oct 10, 2025

Discovered

Jan 9, 2026

Filed

vs. sector median

5 wks faster

This filing is one of 4 about the same incident.View merged incident

A leak claim by akira about this victim predates this filing by 91 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Siteakirabd_3b7db16247e535c52025-11-19 · +51dVerified by operator
Leak Siteakirabd_c9608e607f7aec392025-10-10 · +91dVerified by operator

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_c04db5d13c2734232026-01-09Verified

Name: Stoss Landscape Urbanism
norm: stoss landscape urbanism
Domain: stoss.net

Name: Stoss Landscape Urbanism
norm: stoss landscape urbanism
Domain: stoss.net
Industry: Professional Servicesllm

Discovered: Oct 10, 2025
Breach occurred: Sep 14, 2025
Undetected for: 26 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 23, 2025
Affected individuals: 77state + nationwide
Data types: Identity (basic)Government IDFinancial accountEmployment
Data elements: Social Security number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Reported the incident to law enforcement
Initial access: exploit_public_facing

During the incident: Launched an investigation with the support of external cybersecurity experts
Reported the incident to law enforcement
Offering complimentary access to Experian IdentityWorks for 24 months
Changes made: Implemented a number of safeguards across our systems to enhance our security
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 13 weeks(91 days from discovery to filing)
Compliance flags: ME AG >90d · 91dME resident >60d · 74dLeak >90d
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: Oct 10, 2025
→ Filed with AG: Jan 9, 2026
91d 90 days ME AG >90d
Maine
Discovered: Oct 10, 2025
→ Notified: Dec 23, 2025
74d 60 days (analyst band; statutory cap is 30 days) ME resident >60d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Oct 10, 2025 → Filed with AG: Jan 9, 2026	91d	90 days	ME AG >90d
Maine	Discovered: Oct 10, 2025 → Notified: Dec 23, 2025	74d	60 days (analyst band; statutory cap is 30 days)	ME resident >60d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGJan 9 · first

Maine State AGJan 9 · first · this page

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/f5eb5538-d3ae-47c1-8857-ffa3fb2f180e.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 9, 2026
Raw hash: 154c95dbcd81fb529bd6c94967ff0fae8c44965ba5d74617e219a97cfc87802b

Linked disclosures

Ransomware claims (2)

Regulatory filings (1) · sorted by filing gap

Reporting entityStoss Landscape Urbanism

Victim entityStoss Landscape Urbanism

Incidentdiscovered Oct 10, 2025

Stated responseLaunched an investigation with the support of external cybersecurity experts

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov