This week, as in many occasions in the past, there is news of a massive theft of credit card data. This time it is the retailer Michaels, who lost 3 million credit cards. I don’t say “stolen,” I say “lost,” because anyone still using magnetic card readers (i.e., most of America) has only themselves to blame for that. Cards protected with a pin or chip are worthless on the black market, because the card number by itself is not sufficient to make a purchase. Because of the disaster at Target, that retailer is moving to the European and Latin American type card readers, which are much more secure, because they authenticate using a pin or the chip on the card.