<prompt> Human: I check m t bank statements once a week, but i got this weird feeling today 3 days after i checked it that i needed to check it again and lo and behold someome in Richfield Minnesota usedtested my card and bought 10 of misc shit at a best buy. I called my bank and they automated voice told me theyll close my card or account forgot which one they said for 48 hours and if i dont reactivate it then theyll cancel it or something. So i went to an ATM to make sure it didnt work and i was filled with relief when it didnt. Im wondering how they got my card number without possession of my card and how can i prevent this in the future?  <response>: Im wondering how they got my card number without possession of my cardYou can ask your bank if the card was processed by a swipe, manual entry, or as an online card not present transaction.If it was swiped, it was probably skimmed or hacked from someplace you physically went. If it was a manual entry, then it may have been stolen from a database or something with dummy info in the magstrip and your information on the front of a fake card. how can i prevent this in the future?Frankly, you cant, short of never using the card. Chip and signaturePIN will hopefully reduce card present fraud but wont do a damn thing about card not present fraud. 