Marquis Software Solutions

marquissoftwaresolutions.com

CONFIRMED

Washington State Attorney General formal data breach disclosure notice filed by Marquis Software Solutions affecting 269,773 residents.

Observable Status CONFIRMED

Industry / Sector Technology & Commercial

Incident Classification Network Intrusion & Data Exfiltration

Attributed Threat Actor Unattributed / Unknown

Affected Population 269,773 records

First Seen 2025-11-26

Last Updated 2026-03-16

Compromised Data Classes:

Authentication Credentials

Statutory Regulatory Filings:

Washington Attorney General: RCW 19.255 Data Breach Notice California Department of Justice: SB-24 Data Breach Notice

OPEN WEIGHTS TELEMETRY • DETERMINISTIC CONFIDENCE

Confidence & Source Corroboration

98% CONFIDENCE

1. Primary Authority CONFIRMED BY REGULATOR Base weight: 65%

2. Evidence Specificity +23% Statutory Filing Verified

3. Corroboration Curve +7% 2 independent domains

4. Timeline & Staleness +3% 4 milestones logged

Corroborated Source Domains:

agportal-s3bucket.s3.amazonaws.com oag.ca.gov

STATUTORY REGULATORY DISCLOSURES

Official Regulatory Filings & Legal Compliance Records

2 Verified Statutory Filings

Regulatory Ground Truth Standard: The disclosures below represent formal statutory filings and enforcement records submitted to government regulatory authorities (SEC, State Attorneys General, HHS OCR, FTC, FCC, EU/UK DPAs). In accordance with repository principles, this data is captured exactly as filed by the reporting entity and is never modified, overridden, or synthesized by AI models.

Washington Attorney General

RCW 19.255 Data Breach Notice

CONFIRMED BY REGULATOR

Docket / Accession ID Statutory Public Notice

Statutory Filing Date 2025-11-26

Disclosed Impact 269,773 records

Evidence Standard Regulatory Ground Truth

Statutory Filing Details & Summary (Preserved As Filed):

Official statutory data breach notification submitted by Marquis Software Solutions to the Washington State Office of the Attorney General pursuant to RCW 19.255.010, disclosing unauthorized system access impacting 269,773 residents.

View Official Regulatory Filing Document https://agportal-s3bucket.s3.amazonaws.com/databreach/BreachA35684.pdf

California Department of Justice

SB-24 Data Breach Notice

CONFIRMED BY REGULATOR

Docket / Accession ID Statutory Public Notice

Statutory Filing Date 2026-03-16

Disclosed Impact 269,773 records

Evidence Standard Regulatory Ground Truth

Statutory Filing Details & Summary (Preserved As Filed):

Official statutory data breach notification submitted by Marquis Software Solutions to the California Department of Justice under California Civil Code § 1798.82 (SB-24), disclosing unauthorized access to personal identifiable information of California residents.

View Official Regulatory Filing Document https://oag.ca.gov/ecrime/databreach/reports/sb24-620333

Technical Forensic Briefing

Incident Overview

Marquis Software Solutions, within its operating sector, has been subject to a cybersecurity incident. Ground-truth telemetry indicates the threat activity is currently unconfirmed or under forensic attribution.

Washington State Attorney General formal data breach disclosure notice filed by Marquis Software Solutions affecting 269,773 residents.

Compromised Assets & Data Scope

Current disclosures quantify the affected population at approximately 269,773 records/individuals. Primary affected online infrastructure and perimeter domains include marquissoftwaresolutions.com.

Specific classes of compromised records, credentials, or proprietary information continue to be audited through ongoing forensic investigation.

Statutory Disclosures & Compliance

Washington Attorney General Filing: RCW 19.255 Data Breach Notice (2025-11-26) - Filing Link

Milestone Timeline (4 events logged)

2025-11-26 16:30 UTC

CONFIRMED BY REGULATOR

Washington State Attorney General Breach Notice (RCW 19.255)

Source: Washington State Attorney General Breach Notice (RCW 19.255)

2026-03-16 17:00 UTC

CONFIRMED BY REGULATOR

California Attorney General Data Breach Notice (SB-24)

Source: California Attorney General Data Breach Notice (SB-24)

2026-02-11 17:00 UTC

CONFIRMED BY REGULATOR

California Attorney General Data Breach Notice (SB-24)

Source: California Attorney General Data Breach Notice (SB-24)

2025-12-02 17:00 UTC

CONFIRMED BY REGULATOR

California Attorney General Data Breach Notice (SB-24)

Source: California Attorney General Data Breach Notice (SB-24)

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