Contactless card fraud warning: They can be used months after cancellation

What?????

AFAIK offline payments are not contactless specific.
And in any case, once the payments are processed I expect the bank/Mastercard/Visa to be able to see "ups, this was done with a cancelled card" and either pass the loss to the retailer, or take the loss themselves.
This looks like a Halifax !!!! up to me. And I fail to see why Faye didn't push further and decide to just write a "you know, !!!! happens" article.
How can you sell this as a "technological weakness in the way contactless cards work" when some banks, looking at the table in the article, do better? It's a !!!! up and , if it's a generalized !!!! up, the regulator should get involved.

When TSB said "It won't be if a card's reported stolen - it will if reported lost." nobody though about asking further? Do you really though that was an acceptable answer?

Bank customers whose lost or stolen contactless cards were cancelled may need to comb through months or even years of statements to check for fraudulent transactions, an MSE investigation has found.

Personally I would only have to trawl through a maximum of about 3 days of transactions to spot a fraudulent one

The issue is not that the contactless cards can be used for offline payments - that is how they are designed to work to be quick - it is not a flaw.
The problem is that the banks still apply the charge to the account even though it was using a cancelled card number - this should be possible to check and stop later before being put on the bill.