Mantum Holding AB

Incident Overview

Mantum Holding AB, operating within the Other sector, has been subject to a cybersecurity incident. Ground-truth telemetry indicates the threat activity is attributed to threat actor Wallstreet.

Mantum Holding AB was listed on the Wallstreet ransomware extortion leak portal. A holding company associated with Mantum, a Swedish transport and logistics group serving construction, recycling, and freight sectors

Compromised Assets & Data Scope

The specific volume of affected customer or organizational records remains under active forensic investigation. Primary affected online infrastructure and perimeter domains include mantumholdingab.com.

Specific classes of compromised records, credentials, or proprietary information continue to be audited through ongoing forensic investigation.

Authoritative Directives & Vendor Disclosures

• Continuous Telemetry Monitoring: Formal statutory regulatory filings (SEC Form 8-K, State AG portals) and sovereign agency advisories (CISA, NCSC) are continuously monitored via automated ingestion pipeline.