As hardcore criminals step up their spamming, experts believe that nine out of 10 of all e-mails may soon be unsolicited junk.

Organised criminals based in Russia are fuelling the rise in the amount of spam sent over the Internet, according to a leading opponent of junk mail.

Steve Linford, director of The Spamhaus Project, warned on Tuesday that these gangs are supplying US-based spammers with details of compromised PCs that can be used to send out their unsolicited commercial messages, and creating viruses that will create more of these open proxies.

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