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Marlborough Partners - 1 TB data

coinbasecartel

This record tracks a ransomware attack claimed by the coinbasecartel group against Marlborough Partners - 1 TB data. 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.

371days open
t1 · Published t2 · Pending
Aug 25, 2025Not disclosed yet
Country
United Kingdom
Business Category
Finance / Legal / Insurance
Employees
51-100
Discovered
2026-04-08
Published
August 25, 2025
Disclosed / Notified
Not disclosed yet
Victim ID
mVh6CeV7wLc6

Attack Summary

[AI generated] Marlborough Partners is a UK-based boutique investment banking and advisory firm specializing in mergers and acquisitions, private equity, and corporate finance advisory services. The firm primarily serves mid-market companies across Europe, providing strategic financial advice, fundraising support, and transaction execution. It operates within the financial services and investment banking industry, headquartered in London, United Kingdom.

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 marlboroughpartners.com — indexed by HaveIBeenRansom.
0
found in Infostealer logs
32+
found in Traditional breaches
0+
found in Ransomware leaks
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Visit Website Original Post View Group: coinbasecartel

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