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Listed on a ransomware leak site

Dreyfuss Williams & Associates Co , LPA

dreyfuss.com

Dreyfuss Williams & Associates Co , LPA was listed on the Coinbase Cartel and Knight leak site on Nov 20, 2023. Brandefense has recorded 2 separate claims against it. Information as of Oct 19, 2026.

Country: United StatesIndustry: Unknown
Updated continuously · figures as of Oct 19, 2026
Claimed by
Coinbase Cartel, Knight
First listed
Nov 20, 2023
Claims recorded
2

2 Leak-Site Claims.

Coinbase CartelConfirmed claim
Posted on the leak site
Date not shown
Collected by Brandefense
Sep 15, 2025
Data claimed
Not stated

Posted again 1 time by the same group

Leak-site post text, written by the group
Dreyfuss Williams Attorneys & Counselors at Law is a law firm specializing in Health Care Law, offering legal representation to hospitals and medic...
KnightConfirmed claim
Posted on the leak site
Nov 20, 2023
Collected by Brandefense
Jul 11, 2025
Data claimed
Not stated
Leak-site post text, written by the group
Domain:[removed] of data has been downloaded from Dreyfuss100k+ documents containing information on USA residents including SSN DOB.We wait for you on our chat to take this further if not then we will upload data for the world to see.Disclose a portion of the data: [removed] 7.1 KBproof2.png 83.61 KBproof3.png 191.75 KB

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Other confirmed victims claimed by the same group
VictimClaimed byCountryIndustryData claimedPosted
Westwing Group SE
westwing.com
Coinbase CartelDEGermanyRetailNot stated
Integrated Health Systems
integratedhealthstack.com
Coinbase CartelUSUnited StatesTechnologyNot stated
RXPE Group
rxpe.com
Coinbase CartelCNChinaEnergy and UtilitiesNot stated
Tower Insurance
tower.co.nz
Coinbase CartelNZNew ZealandInsuranceNot stated
Flecha Bus
flechabus.com.ar
Coinbase CartelARArgentinaTransportation and LogisticsNot stated
OTEIS Conseil & Ingénierie
oteis.fr
Coinbase CartelFRFranceConsultingNot 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.