You walk up to an ATM machine, absentmindedly throw your card in and type in your pin. You walk away with your cash and get on with your day. A few days later, you start to notice some unusual charges on your card. Little did you know, the ATM machine you used had a very thin device in the slot where you inserted your card.
That device is able to read your card number. Meanwhile, a miniscule video camera mounted just over your shoulder recorded your pin. After you left, scammers came to collect the device and empty the accounts recorded using the pins they captured on camera.
How to avoid: always make sure the slot where you insert your card has nothing attached to it. These devices may be cleverly disguised to look like normal parts of an ATM, so look closely. If you see one of these devices, contact your local police department to help your fellow bankers from being made victim.
***There is a similar scam happening at gas stations. Please see Gas station skimmer scam in the Auto category.