This an email from a bona fide airline:
Please be informed that your transaction with [international carrier] has been confirmed. Due to fraud prevention procedure against Credit Card transaction, we would like to validate your recent transaction with [international carrier] by filling information below :
Passenger(s) name :
Date of Travel :
Cardholder name :
Also, we need to confirm and validate your name and last four digit of your card number. Please kindly provide scanned/image of your front side credit card that used to buy the ticket. You may cover the rest information on the card. Please reply in 8 hours after received this email or we will cancel the reservation.
Thank you for your cooperation.
Verification Data Management