Cybercriminals Revive Old Scams to Target Smartphones

As mobile phones get more sophisticated, hi-tech criminals are dusting off some old tricks. Security companies have noticed a rise in trojans known as diallers that used to be popular during the days of dial-up net access. On a smartphone the diallers are being used to call premium rate lines leaving victims with a big bill. Experts say the diallers are proving popular as a quick way for criminals to cash in