This record tracks a ransomware attack claimed by the
thegentlemen group against
MB Associates. 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.
8days open
t1 · Published
t2 · Pending
Business Category
Services
Published
August 28, 2026
Disclosed / Notified
Not disclosed yet
Attack Summary
mbassociates.org zoominfo.com/c/mb-associates/372858181 MB Associates is a UK social impact consultancy founded in 2005 by Mandy Barnett (London Business School MBA, chair of Social Value UK), based in Holmfirth, West Yorkshire; its legal entity is Mandy Barnett Associates Ltd (incorporated 7 Sep 2005, registered in Welwyn Garden City). It helps people, projects and organisations understand and increase their social impact — impact evaluation, SROI analysis, consultation and research, creative facilitation, training and toolkits — working through a Plan–Do–Review cycle that starts with a "Story of Change". Clients include Arts Council England, the National Lottery, UKRI-AHRC, Natural Resources Wales, Bristol City Council, the National Children's Orchestra, museums and charities; it also runs its own learning platform, Culture3 (culturecubed.org). In February 2026 the founder handed the firm over to colleagues — directors Jael Williams and Emily Wilson — and the brand
Leak Screenshots
SAMPLE
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Dark Web Exposure
Findings for mbassociates.org
— indexed by HaveIBeenRansom.
0
found in Infostealer logs
61+
found in Traditional breaches
6+
found in Ransomware leaks
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linkedIN_2.7z.001
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••• emails
linkedIN_2.7z.001
Database World ROC · breach
••• emails
BqNyADhG.7z
DBs Backup · breach
••• emails
Access Intelligence
play · ransomware
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
B F R e p o V 3 F i l e s · breach
••• emails
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