![]() ![]() Working out the card number, expiry date and security code of any Visa credit or debit card can take as little as six seconds and uses nothing more than guesswork, new research has shown. ![]() Circumventing all the security features put in place to protect online payments from fraud, investigators on the recent Tesco cyberattack believe that hackers used a 'guessing attack' method to defraud Tesco customers of £2.5m.Dubbed the Distributed Guessing Attack, the team from Newcastle University, UK, say it can take just six seconds to find the card number, the expiry date and the CVV using nothing more than a laptop and an internet connection.New research reveals the ease with which criminals can hack an account without ANY of the card details.
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