(London Telegraph) Criminals can work out the card number, expiry date and security code for a Visa debit or credit card in as little as six seconds using guesswork, researchers have found.
Experts from Newcastle University said it was “frighteningly easy” to do with a laptop and an internet connection.
Fraudsters use a so-called Distributed Guessing Attack to get around security features put in place to stop online fraud, and this may have been the method used in the recent Tesco Bank hack.
