The wallstreet ransomware group listed Mantum Holding AB on its data leak site on 2026-10-13. Country: SE Sector: Other Claim as published on the leak site: A holding company associated with Mantum, a Swedish transport and logistics group serving construction, recycling, and freight sectors
OffSet7 / Dark Web / wallstreet
Mantum Holding AB listed by wallstreet ransomware group
- Group
- wallstreet
- Sector
- Other
- Country
- Sweden
- First seen
- 13 October 2026
This is a claim published by the threat group itself and has not been independently verified. OffSet7 does not host or link to any leaked data.
Monitor your company and suppliers
Get an alert the moment a ransomware group names your company or one of your suppliers.