Skip to content

Search Ransomware Intelligence

Jump to a group, country, industry or search victims.

Listed on a ransomware leak site

Mantum Holding AB

mantum.se

Mantum Holding AB was listed on the Wallstreet leak site on Oct 13, 2026. Information as of Oct 19, 2026.

Country: SwedenIndustry: Education and Research
Updated continuously · figures as of Oct 19, 2026
Claimed by
Wallstreet
First listed
Oct 13, 2026
Claims recorded
1

Leak-Site Claim.

WallstreetConfirmed claim
Posted on the leak site
Oct 13, 2026
Collected by Brandefense
Oct 13, 2026
Data claimed
Not stated
Leak-site post text, written by the group
A holding company associated with Mantum, a Swedish transport and logistics group serving construction, recycling, and freight sectors

Get alerted the moment your company or a supplier is posted on a leak site.

Alert me
Other confirmed victims claimed by the same group
VictimClaimed byCountryIndustryData claimedPosted
Girl Scouts of Eastern Massachusetts
gsema.org
WallstreetUSUnited StatesNon-profit and Civil SocietyNot stated
TGM Manufacturing, Inc
tgminc.com
WallstreetUSUnited StatesManufacturingNot stated
E-Z Pack Trucks
ezpacktrucks.com
WallstreetUSUnited StatesManufacturingNot stated
Green Clinic
green-clinic.com
WallstreetUSUnited StatesHealthcare2 TB
Lambertinum Seniorenwohnanlage
lambertinum.de
WallstreetDEGermanyHealthcareNot stated
Brunnberg & Forshed Arkitektkontor
brunnbergoforshed.se
WallstreetSESwedenConsultingNot stated
Other confirmed victims in the same industry
VictimClaimed byCountryIndustryData claimedPosted
The Akeeli Group
theakeeligroup.com
N0nUSUnited StatesEducation and ResearchNot stated
Llano Independent School District
llanoisd.org
QilinUSUnited StatesEducation and ResearchNot stated
Solid Trading B.V.
solid-fx.com
N0nNLNetherlandsEducation and ResearchNot stated
First Brothers Co., Ltd
firstbrothers.com
QilinJPJapanEducation and ResearchNot stated
Wellington College International School Bangkok
wellingtoncollege.ac.th
The GentlemenTHThailandEducation and ResearchNot stated
nowaszkola.com
nowaszkola.com
INC RansomPLPolandEducation and ResearchNot stated

Get Real-Time Alerts, IOC Feeds And Takedowns.

The Brandefense platform watches every leak site for your company, vendors and executives, and acts on what it finds.

Figures as of Oct 19, 2026. Confirmed leak-site claims collected by Brandefense technologies and validated by Brandefense analysts.

Listed on a leak site means a ransomware group has claimed the company; it is not a confirmed breach. To request a correction or removal, contact Brandefense.