Marquis Software Solutions Data Breach History

This page tracks the Marquis Software Solutions data breach history and cybersecurity incidents affecting Marquis Software Solutions (United States). BreachHistory currently indexes 2 publicly disclosed or catalogued incidents spanning 2025 through 2026, with approximately 672 thousand records reported as exposed across all indexed events. These totals may include overlapping datasets or third-party estimates and should not be interpreted as unique affected users.

The Marquis Software Solutions breach timeline includes major data breaches, cyber attacks, data leaks, credential exposures, API abuse, and other security incidents. Each incident provides details on the estimated records exposed, attack method, affected data types, and supporting public sources. Currently, 0 incidents are company-confirmed.

Largest Marquis Software Solutions Data Breaches

The largest indexed incidents include the 2025 Marquis Software Solutions — ransomware; 672K people across 74 banks (SonicWa…. Record counts originating from threat actors or leak sites should be treated as estimates unless confirmed by Marquis Software Solutions or a regulator. Below is the list of large data breaches:

• 2025 2025 Marquis Software Solutions — ransomware; 672K people across 74 banks (SonicWall vector) — about 672.1K records exposed · Catalogued incident

What Information Was Exposed?

Depending on the incident, exposed data may include Social Security numbers and national IDs, phone numbers, names, physical addresses, dates of birth, and other personal information (PII). The exact data varies between incidents, so review each breach page before assuming your information was affected.

Marquis Software Solutions Data Breach 2026

At the time of this update, BreachHistory catalogues 1 2026 incident related to Marquis Software Solutions. Most recent entry: 2026 Marquis Software Solutions — California AG data breach notification. New incidents are added as official disclosures, regulatory filings, or credible cybersecurity reports become available.

What To Do If You Were Affected

If you believe your account may have been involved in a Marquis Software Solutions data breach, change any reused passwords, enable multi-factor authentication (MFA), monitor your account for suspicious activity, and be cautious of phishing emails or fake breach notifications.

This Marquis Software Solutions breach history is maintained by BreachHistory using public disclosures, regulatory filings, security research, and clearly labelled third-party claims. For the complete breach timeline, records exposed, incident details, and AI Breach Risk Score, explore the sections on this page.