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Ukraine Detains Suspected XSS.is Administrator at France’s Request

The arrest marks a culmination of a cross-border probe that wiretapped an encrypted Jabber server to trace millions in illicit ransomware proceeds.

a law enforcement seizure notice on XSS.is, confirming it has been seized.
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Overview

  • The investigation began on July 2, 2021, when Paris prosecutors authorized judicial wiretaps on the ‘thesecure.biz’ XMPP server.
  • Intercepted chats uncovered at least $7 million in profits from ransomware and related cybercrimes on XSS.is.
  • A subsequent interception pinpointed the alleged administrator and led to French on-site deployments in September 2024.
  • Ukrainian police detained the suspect on July 22 at France’s request with assistance from Europol and French officers.
  • Authorities now possess evidence that could implicate other forum members and dampen activity on the Russian-speaking platform.