The UK's Office of Fair Trading (OFT) is calling for international agencies to work together to stop spam.

A conference on Monday hosted by the OFT and the Federal Trade Commission rallied consumer and data protection agencies, telecommunications companies and others from 20 countries.

It signified an attempt to reach a transnational anti-spam deal. Spam now accounts for over 60 percent of internet traffic.

John Vickers, OFT Chairman, said: "Spam is not just annoying and intrusive. It gets in the way of legitimate e-commerce, and is often a vehicle for scams and computer viruses.

“International collaboration by enforcement agencies, the efforts of the computer and communications industries, and smart consumers at home (who take steps to protect themselves) are all needed to combat the internet scammers."