A Chinese technology regulator has announced a 14-month campaign to root out services that allow people in the country to circumvent the government's internet censorship. The Ministry of Industry and Information Technology says it forbids the use of virtual private networks (VPNs) or leased lines that allow users and businesses to access blocked overseas websites without permission. The ministry said Sunday it also will inspect and "clean up" the market of internet service providers. Numerous foreign and domestic companies in China use VPNs to conduct business, and private citizens often use the technology to access banned websites such as Google, Facebook and Twitter. China's government has waged a long-running campaign to deter VPN use, blocking access to VPNs and regularly disrupting the channels.