[logicuce]

Agreed. Square would be in best position to take that call and he might be very good at his work there. Hence my comment above was a question rather than a suggestion.

That said, this article doesn't seem to be a tongue in cheek thing. He is the lead security researcher at a payment processing company. A critical position I believe.

I am not sure if such a person can afford to have written that article where people who are not security researcher can easily find conceptual flaws.