Ukrainian authorities have apprehended the suspected administrator of XSS.is, a notorious Russian-speaking hacking forum, following a four-year French-led investigation. The operation, supported by Europol, involved breaching encrypted communications and seizing the forum's backend, exposing illicit activities that generated over $7 million in ransomware profits. This takedown signals escalating global efforts to disrupt cybercrime ecosystems and could lead to further arrests among the forum's 50,000 users.