A Chinese-language Virtual Private Network service provider dubbed Terracotta VPN offers a network of compromised servers as a stealth hacking platform. The attacks appear to be coming from legitimate IP addresses from organizations having a good reputation. Victims include a Fortune 500 hotel chain, a hi-tech manufacturer, a law firm, a doctors office, school and university systems, a county government for an unidentified U.S. state, the report found. The majority of the servers owned by the service consists of compromised machines located in China, Japan, South Korea, the United States, and some countries in Eastern Europe.”]
Source: http://securityaffairs.co/wordpress/39114/cyber-crime/terracotta-vpn-hacking-platform.html