Could be the most serious error that has ever been found.
Researchers in Cambridge have found perhaps most serious error in the use of our normal credit card with a chip.
The error is built into the standard that forms the basis of how debit cards are communicating with ordinary shop terminals, which means that millions of terminals or 100's million cards may need to be replaced.
Omegapoints safety expert John Wilander and blogs commenting on how the error occurred and what possible ways to correct it can be.
Links
The article in Aftonbladet (swedish)
Chat with John Wilander at Aftonbladet (swedish)
Story in Plus on SVT (swedish)