'Pump and Dump' conmen targeted

By Maggie Shiels
Technology reporter, BBC News, Silicon Valley

Shanghai stock exchange, AP
Spam is used to boost share prices so conmen can cash in

Scammers using the net to hype stocks are being targeted with software that can spot fraudulent trading patterns.

Many hi-tech conmen use junk mail to hype stocks so they can sell shares they own in the companies at a profit.

It has been estimated that 15% of all spam or junk e-mail is made up of messages that "pump" stocks that are later "dumped".

Developed by web giant VeriSign the anti-fraud software works by keeping an eye on real-time trading activity.

"This gives brokers a jump on the attackers and raises the bar," said Perry Tancredi, senior manager of anti-fraud services at Verisign.

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