Another purely psychological variant of fraud. Call usually those about whom already have some information j shop cc. They call the cardholder’s last name and address them by their first and middle names.
They talk about the suspicion of theft of money from the card account, specify the card details. And between other phrases, they fish out the person’s card details and pin code.
How to protect yourself: don’t send your full bestvalid cvv card details over the phone. The Bank only needs the first or last 4 digits of the card, your code word or ID number in the passport.