Marquis Ransomware — Victims, Campaigns & Activity

Threat entity extracted from intelligence sources

Frequency
23
occurrences
First Seen
November 22, 2025
Last Seen
March 27, 2026

Related Threat Clusters

  • Marquis Software Solutions Data Breach Exposes Customer Data of US Banks

    Marquis Software Solutions experienced a ransomware attack on August 14, 2025, leading to the exposure of sensitive customer information, including Social Security Numbers and names. The company serves numerous banks…

    6 articles · Updated December 3, 2025
  • Ransomware Attack on Marquis Software Affects Over 670,000 Bank Customers

    Marquis Software Solutions reported that a ransomware attack last year compromised the personal and financial data of 672,075 individuals. The breach, which affected more than 74 banks, credit unions, and financial…

    2 articles · Updated March 19, 2026
  • Ransomware Slowdown Masks Rise in Nation-State Attacks on Infrastructure

    The Waterfall Threat Report 2026 reveals a 25% decrease in cyber breaches with physical consequences, dropping to 57 incidents in 2025 from 76 in 2024. This decline is attributed to a temporary slowdown in ransomware…

    2 articles · Updated March 27, 2026
  • Marquis Fintech Firm Reports Ransomware Attack Affecting U.S. Banks

    Fintech firm Marquis has notified U.S. banks and credit unions of a ransomware attack that occurred in August 2025. Hackers accessed files containing sensitive customer data, impacting several clients in the financial…

    4 articles · Updated December 3, 2025
  • Flickr Reports Data Breach Linked to Third-Party Email Provider

    Flickr has notified users of a data breach that occurred on February 5, 2026, due to a vulnerability at a third-party email service provider. The breach exposed users' real names, email addresses, IP addresses, and…

    16 articles · Updated February 6, 2026
  • VeraBank Data Breach Exposes Personal Data of 37,000 Customers

    VeraBank has disclosed a data breach affecting approximately 37,000 customers due to a cyber attack on its vendor, Marquis. The breach has resulted in the exposure of sensitive personal information, including Social…

    2 articles · Updated January 7, 2026
  • Data Breach Affects Thousands at Marquis

    On August 14, 2025, Marquis reported suspicious activity on its network, leading to a significant data breach. Thousands of individuals have been affected, although specific details regarding the data compromised have…

    1 article · Updated December 28, 2025
  • Marquis Software Solutions Breach Linked to SonicWall Security Incident

    Marquis Software Solutions, a Texas-based financial services provider, has reported that a ransomware attack in August 2025, affecting multiple banks and credit unions, was due to a breach at its firewall provider,…

    13 articles · Updated January 30, 2026
  • Time Bank Ransomware Breach Exposes Data of Nearly 4000 Customers

    Time Bank has reported a ransomware breach affecting nearly 4000 customers after an unauthorized party accessed its network. The incident was linked to suspicious activity identified by Marquis on August 14, 2025.

    2 articles · Updated December 5, 2025
  • Data Breach Affects 400K Customers of Marquis Fintech Firm

    A significant data breach linked to U.S. fintech firm Marquis has compromised the personal information of at least 400,000 bank customers. Hackers exploited an unpatched vulnerability in a SonicWall firewall, primarily…

    1 article · Updated December 20, 2025

Recent Intelligence Reports

  • Infrastructure Attacks With Physical Consequences Down 25% — Darkreading · March 27, 2026
  • Bank software vendor Marquis says more than 670,000 impacted by August breach — Therecord.Media · March 18, 2026
  • Flickr Discloses Potential Data Exposure Following Third — Technadu · February 6, 2026
  • Fintech Firm Marquis Claims SonicWall Security Breach Led To Hack — Crowdfundinsider · February 1, 2026
  • Marquis confirms data breach, point finger of blame at SonicWall firewall — Techradar · January 31, 2026
  • Fintech firm Marquis blames hack at firewall provider SonicWall for its data breach — Techcrunch · January 29, 2026
  • Vendor breach compromised the data of over 37000 VeraBank customers — Teiss · January 6, 2026
  • Thousands affected by data breach, officials say — Youtube · December 28, 2025

CVSS v3.1 Breakdown