This is a quote from the book "On Zero Confirmation Transactions" by Chris Pacia
...e spend attempt and flagged the cashier to halt the transaction. The screen might read ‘payment declined’ and the customer asked for another form of payment. Should the original transaction
actually confirm, the retailer could just refund it. The patches actually got merged into the codebase but, of course, the usual suspects bitched and moaned about ‘encouraging people to rely o
n zero confirmation transactions’ and the code was removed.
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So basically a patch that could have prevented people from fraud was removed. And what’s rich is that some of the sam...