The perpetrators used social engineering techniques to bypass the security systems of telecommunications operators. The primary tool of the group was SIM-swap attacks—duplicating and intercepting victims' phone numbers through vulnerabilities in telecom operators. Afterward, the fraudsters gained access to victims' accounts on cryptocurrency exchanges and completely drained them. The stolen funds were laundered through an international network of bank accounts and multi-currency digital wallets. The criminals caused losses amounting to tens of millions of zlotys. Hacker Wojtek Kulis, known by the alias "Merry," and three other suspects have been taken into custody. They have been charged with creating an organized crime group, hacking, and money laundering. The fraudsters face up to 25 years in prison.