On the right of this photo is a 1-euro coin, which is more or less the size of a U.S. dollar coin. On the left is a super-thin skimmer recovered from the card-reader slot of an ATM in Europe. Powered by a watch battery, it was only found when the ATM displayed a “fatal error” message and a technician came by to figure out what was wrong. (Krebs on Security) The bank that showed this skimmer to Krebs on Security wants to stay anonymous, but is somewhere in Europe.