A long-running investigation led by the French Police and Paris Prosecutor, in close cooperation with their Ukrainian counterpart and Europol, has led to the arrest of the suspected administrator of xss.is, one of the world’s most influential Russian-speaking cybercrime platforms.

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The forum, which had more than 50 000 registered users, served as a key marketplace for stolen data, hacking tools and illicit services. It has long been a central platform for some of the most active and dangerous cybercriminal networks, used to coordinate, advertise and recruit.

The arrest took place in Kyiv, Ukraine, on 22 July, as part of a series of coordinated enforcement actions aimed at gathering evidence and dismantling the criminal infrastructure.

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The forum’s administrator was not only a technical operator but is believed to have played a central role in enabling criminal activity. Acting as a trusted third party, he arbitrated disputes between criminals and guaranteed the security of transactions. He is also believed to have run thesecure.biz, a private messaging service tailored to the needs of the cybercriminal underground.

Through these services, the suspect is thought to have made over EUR 7 million in advertising and facilitation fees. Investigators believe he has been active in the cybercrime ecosystem for nearly two decades, and maintained close ties to several major threat actors over the years.

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