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 Winni, used by up to 200m people. It targets those downloading illegal copies of games in the Hentai genre, an explicit form of anime. Website Yomiuri claims that 5500 people have so far admitted to being infected.
"If you find you are getting pop-ups demanding payments to settle copyright infringement lawsuits, ignore them and use a free online anti-malware scanner immediately to check for malware," said Mr Ferguson.