VeriFone has recently reported that scammers are posing as VeriFone Help Desk agents asking customers to “test” payment terminals with phone cards.
How it works: The site receives a phone call from someone posing as the VeriFone Help Desk stating that they need to test the payment terminal with a phone card. The cashier at the site is then asked to authorize several phone cards, including the PIN located on the card for verification. The stolen PINs are then used, leaving the authorizing site with the expense.
Please note that the VeriFone Help Desk will NEVER ask for PIN information over the phone or insist that a site authorize a phone card.