Dozens of people in Northern Ireland have become victims of a new telephone card scam, according to the police.
People are warned not to reveal their credit card details
Credit card holders have been warned to be cautious by the PSNI's Fraud Squad after they received reports of the scheme.
One person had £500 stolen from their account within 15 minutes of giving their details over the telephone.
Detective Chief Inspector Larry Cheshire said card holders should become suspicious if they are asked to give the three digit security number on the back of the card.
"The thing to bear in mind is that if it is a genuine call, from the credit card company, to check out a purchase then they will have all the details of the cardholder in front of them on the screen," he said.
"They will not ask you to confirm anything, they will not ask you for those details."