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Ransomware group Wallstreet hits Mantum Holding AB
Mantum Holding AB — a other target operating in SE has been listed by the Wallstreet ransomware group on 2026-10-13. 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 | Mantum Holding AB |
|---|---|
| Threat Group | Wallstreet |
| Summary | A holding company associated with Mantum, a Swedish transport and logistics group serving construction, recycling, and freight sectors |
| Date of Breach | 2026-10-13 |
| Discovery Date | 2026-10-13 |
| Region | SE |
| Target Domain | — |
| Business Sector | Other |
| Severity | MEDIUM |
Claim by Wallstreet
A holding company associated with Mantum, a Swedish transport and logistics group serving construction, recycling, and freight sectors
Posted by the Wallstreet threat actor on its public leak site. This is the group's own statement and has not been independently verified by HackerFeeds.
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