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Ransomware group thegentlemen hits MB Associates
MB Associates — a professional services target operating in GB has been listed by the thegentlemen ransomware group on 2026-08-28. The information below reflects what the threat actor has publicly claimed on their leak site; the details have not been independently verified.
Incident Report
| Target Organization | MB Associates |
|---|---|
| Threat Group | thegentlemen |
| 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 |
| Date of Breach | 2026-08-28 |
| Discovery Date | 2026-08-30 |
| Region | GB |
| Target Domain | mbassociates.org |
| Business Sector | Professional Services |
| Severity | MEDIUM |
Claim by thegentlemen
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
Posted by the thegentlemen threat actor on its public leak site. This is the group's own statement and has not been independently verified by HackerFeeds.
Disclaimer
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