Cybercriminals are using computers infected with a particular piece of malware to power a commercial proxy service that funnels potentially malicious traffic through them. Backdoor.Proxybox is a Trojan program with rootkit functionality that transforms the computer into a proxy server. The rootkit component uses a novel technique to prevent access to the malware’s other files and increase its persistence on the system. For $25 a month, customers can get access to 150 proxy servers from the countries they desire, while for $40 they can get unlimited number of proxies.”]