MB Associates

About the organisation

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

ShellCodeX evidence assessment

Strong record · 85/100. Strong record completeness based on identity, context and retained source evidence. This score does not verify the attacker's allegation.

• A plausible organisation domain is attached to the claim.
• The record includes organisation-specific context rather than only a victim name.
• Country attribution is available for geographic context.
• Sector classification supports peer-risk comparison.
• A source listing reference is retained for traceability.

What the listing means

MB Associates appeared on the thegentlemen leak site on 30 August 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated — the attack itself is dated 28 August 2026, 1 day before the listing. This group has published 139 claims in the last 30 days and remains active.

Recommended actions

• Treat any unsolicited message referencing MB Associates as suspicious — leaked data gets weaponised for phishing within days.
• If you hold an account on mbassociates.org, change that password now, update it anywhere you reused it, and enable two-factor authentication.
• Other Professional Services organisations should review this group's known TTPs and validate detection coverage against them.
• Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
• A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.

Leak-site evidence

Listing URL https://www.ransomware.live/id/TUIgQXNzb2NpYXRlc0B0aGVnZW50bGVtZW4=