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company

SumUp

Payments company that sells card readers and point-of-sale terminals to merchants, including the Solo and Plus readers.

Current clusters

security5 publishers

Zombie cards: expired plastic still pays because nobody owns the expiry check

UMass Amherst researchers bought groceries with an expired contactless card. The date that is supposed to kill it is unsigned, zeroed out before the issuer sees it, and checked by nobody in particular.

Perspective Coverage

5 publishers
Builder
Builder 42%
Operator
Operator 51%
Investor
Investor 7%

Reality

Evidence72
Adoption
Insufficient
Hype gap+25
Incentives30
Confidence70