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Listed on a ransomware leak site

Defiance

defiancellc.com

Defiance was listed on the Sarcoma leak site on May 4, 2025. Information as of Oct 19, 2026.

Country: United StatesIndustry: Unknown
Updated continuously · figures as of Oct 19, 2026
Claimed by
Sarcoma
First listed
May 4, 2025
Claims recorded
1

Leak-Site Claim.

SarcomaConfirmed claim
Posted on the leak site
May 4, 2025
Collected by Brandefense
Jul 11, 2025
Data claimed
Not stated
Leak-site post text, written by the group
Defiance Defiance Energy Services, LLC provides water hauling and other services to energy producers throughout the Haynesville Shale. We offer low-cost and efficient services that minimize non-productive time for our customers. In business since 2008, we are now one of the largest water haulers in the Haynesville. We run about 50 vacuum truck each day, serving our customers 24/7/365. In all our work, the safety of our employees, customers, and the environment are paramount. To that end, we maintain a rigorous compliance program to exceed all federal, state, and local regulatory requirements…

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Other confirmed victims claimed by the same group
VictimClaimed byCountryIndustryData claimedPosted
victim
victimsupport.org.uk
SarcomaGBUnited KingdomNon-profit and Civil SocietyNot stated
GYF
gyf.com.ar
SarcomaARArgentinaTechnologyNot stated
Propane Levac Inc.
propanelevac.ca
SarcomaCACanadaEnergy and UtilitiesNot stated
MecMatica
mecmatica.it
SarcomaITItalyTechnologyNot stated
Söllner
bedachungen-soellner.de
SarcomaDEGermanyUnknownNot stated
B&J Rocket Sales
bj-rocket.com
SarcomaCHSwitzerlandUnknownNot 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.