As a follow-up to my recent articles on the major fraud in the US on Lloyds Avios Rewards American Express cards, I was contacted last week by a reader who works in the credit card industry on the fraud side who explained how he believed it had happened.
You may remember that Lloyds Bank claimed to be the innocent party in all this. The line given to the media, including me, was that there had been a data breach somewhere on the American Express side.
This had a funny smell to it, as I said to all of the journalists who contacted me. The fraudsters had made fully working American Express credit cards. I found it unlikely, to put it mildly, that you could make a fully working plastic Amex card just from knowing the card number.
The reader thought that Lloyds Bank does not appear to have implemented two important security features on its credit cards.
Firstly, he believes that the Lloyds Bank / Amex processing system does not verify most of the key card information, including the expiry date, before transactions are approved. The net result of this is that you only need the credit card number in order to manufacture a fake Lloyds Bank American Express credit card. As the first six digits of Lloyds Bank American Express cards appear to be the same for all cards, it is easier to churn through various permutations to find working numbers even if there was no data breach.
In addition, the reader believes that Lloyds does not appear to match the data from the card terminal (which tells Lloyds whether a transaction is chip, swipe or a contactless tap) with the security data used for verification. If this was right, it would mean that it would accept the lower level of verification required for contactless transactions – and this is low level verification because contactless fraud is virtually impossible – even when the transaction was not contactless. It is apparently possible to overwrite the magnetic strip on a real credit card (issuer and card number immaterial) with the lower level of data required to validate a contactless transaction which would be charged to a Lloyds Avios Amex account.
I should stress that we don’t know if any of the above is actually true, but the hypothesis does appear to fit the known facts in this case.
Want to earn more points from credit cards? – June 2021 update
If you are looking to apply for a new credit or charge card, here are our June 2021 recommendations based on the current sign-up bonus.
You can see our full directory of all UK cards which earn airline or hotel points here. Here are the other top current deals:
British Airways American Express
5,000 Avios for signing up, no annual fee and a companion voucher for spending £20,000 Read our full review
British Airways American Express Premium Plus
25,000 Avios and the UK’s most valuable credit card perk – the 2-4-1 companion voucher Read our full review
American Express Preferred Rewards Gold
Your best beginner’s card – 20,000 points, FREE for a year & two airport lounge passes Read our full review
The Platinum Card from American Express
30,000 points and an unbeatable set of travel benefits – for a fee Read our full review
Virgin Atlantic Reward+ Mastercard
15,000 points bonus and the most generous non-Amex for day to day spending Read our full review
Earning miles and points from small business cards
If you are a sole trader or run a small company, you may also want to check out these offers.
American Express Business Gold
20,000 points sign-up bonus and free for a year Read our full review
American Express Business Platinum
40,000 points sign-up bonus and a long list of travel benefits Read our full review
British Airways Accelerating Business American Express
Earn both Avios and BA On Business points with your business spending Read our full review
Capital On Tap Business Rewards Visa
The most generous Avios Visa or Mastercard for a limited company Read our full review