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Listed on a ransomware leak site

Kaefer

kaefer.com

Kaefer was listed on the Everest leak site on May 8, 2025. Information as of Oct 19, 2026.

Updated continuously · figures as of Oct 19, 2026
Claimed by
Everest
First listed
May 8, 2025
Claims recorded
1

Leak-Site Claim.

EverestConfirmed claim
Posted on the leak site
May 8, 2025
Collected by Brandefense
Jul 11, 2025
Data claimed
Not stated
Leak-site post text, written by the group
Kaefer is a global company that specializes in providing services in insulation technology, interior outfitting, surface protection, passive fire protection & refractory, and access solutions. Headquartered in Bremen, Germany, the firm operates in various sectors such as industry, offshore, marine, and construction. Established in 1918, Kaefer aims to provide energy efficient solutions and services.

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Other confirmed victims in the same industry
VictimClaimed byCountryIndustryData claimedPosted
GTL Concreto e Logística LTDA
gtlconcreto.com.br
EmperadorBRBrazilManufacturing2 GB
American Campus
americancampus.com
HelixUSUnited StatesConstructionNot stated
POWERsonic Industries Inc.AuroraCACanadaManufacturingNot stated
SMIC US Company (Sunnyvale, CA, US arm of Semiconductor Manufacturing International Corpo...
smics.com
N0nCNChinaManufacturingNot stated
mckenneys
mckenneys.com
Iah6477USUnited StatesConstruction295.9 GB
Pergande
pergande.de
QilinDEGermanyManufacturingNot stated

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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.