A joint investigation by Spanish and British law enforcement authorities, coordinated by Europol and its Joint Cybercrime Action Taskforce (J-CAT), has resulted in the dismantling of an international cybercrime group involved in the design, development and selling of sophisticated software tools to render all types of malicious malware  infecting thousands of computers worldwide undetectable by security products.

https://www.europol.europa.eu/newsroom/news/cybercrime-ring-dismantled-europol%E2%80%99s-support