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Cass information Systems

coinbasecartel

This record tracks a ransomware attack claimed by the coinbasecartel group against Cass information Systems. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.

Window Zero

EXPOSURE GAP

Window Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.

112days open
t1 · Published t2 · Pending
May 11, 2026Not disclosed yet
Country
United States
Business Category
Telecommunications
Employees
51-100
Discovered
2026-05-11
Published
May 11, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
FqxgQgYunFzb

Attack Summary

[AI generated] Cass Information Systems is a US-based company specializing in payment and information services. It provides freight invoice processing, auditing, and payment solutions, along with utility and telecom expense management. Operating primarily in the financial technology and business process outsourcing industry, Cass serves large corporations across North America and globally, helping clients manage and analyze invoice data to optimize spending and operational efficiency.

Leak Screenshots

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for cassinfo.com — indexed by HaveIBeenRansom.
15
found in Infostealer logs
2,410+
found in Traditional breaches
590+
found in Ransomware leaks
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+ 17 more leak sources locked
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Visit Website Original Post View Group: coinbasecartel

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