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<blockquote data-quote="Trident" data-source="post: 1039845" data-attributes="member: 99014"><p>Normally wherever reservations (not prepaid) are created (hotels, posh restaurants, private clubs) they will attempt to pre-authorise or charge & refund the card for 0.01 or 1.00 or something similar. Pre-auth will then expire in accordance with the bank policies, in the UK this is within 7 days whilst in other countries specifically in Eastern Europe or the Middle East, it may take up to 45 days.</p><p>Frequently attackers will create such reservations to establish whether the card is valid (if it is not then the reservation will be cancelled).</p><p></p><p>Normally the bank and the merchant will use platforms that detect fraud by analysing various digital fingerprints such as IP, hardware information, location and others. Sometimes they may decide to block the transaction but other times, the overall score of suspicion is not high enough.</p><p></p><p>In the UK now all banks require 2FA (3D Secure) and soon, it will only be done via the app and not via SMS code (due to mobile carriers staff that lacks care and possibility of abuse).</p></blockquote><p></p>
[QUOTE="Trident, post: 1039845, member: 99014"] Normally wherever reservations (not prepaid) are created (hotels, posh restaurants, private clubs) they will attempt to pre-authorise or charge & refund the card for 0.01 or 1.00 or something similar. Pre-auth will then expire in accordance with the bank policies, in the UK this is within 7 days whilst in other countries specifically in Eastern Europe or the Middle East, it may take up to 45 days. Frequently attackers will create such reservations to establish whether the card is valid (if it is not then the reservation will be cancelled). Normally the bank and the merchant will use platforms that detect fraud by analysing various digital fingerprints such as IP, hardware information, location and others. Sometimes they may decide to block the transaction but other times, the overall score of suspicion is not high enough. In the UK now all banks require 2FA (3D Secure) and soon, it will only be done via the app and not via SMS code (due to mobile carriers staff that lacks care and possibility of abuse). [/QUOTE]
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