Page last updated at 14:00 GMT, Thursday, 15 April 2010 15:00 UK A new type of malware infects PCs using file-share sites and publishes the user's net history on a public website before demanding a fee for its removal. The Japanese trojan virus installs itself on computers using a popular file-share service called Winny, used by up to 200m people. It targets those downloading illegal copies of gam