Fraud experts in Mexico have discovered an unusual ATM skimming device that can be inserted into the mouth of the cash machine’s card acceptance slot and used to read data directly off of chip-enabled credit or debit cards.
The device pictured below is a type of skimmer known as a “shimmer,” so named because it acts a shim that sits between the chip on the card and the chip reader in the ATM — recording the data on the chip as it is read by the ATM.
The chip reading component includes the eight gold rectangular leads seen on the right side of this device; the electronics that power the data storage on the shimmer can be seen in black at the top of the image.
According to information from Damage Control S.A., a security and investigations company based in Mexico, this device was found inside a Diebold Opteva 520 with Dip reader (the kind of card reader that requires you to briefly insert your card and then quickly remove it). The device is inserted from the outside of the ATM and no access is required to the ATM internals. Damage Control, which disseminated the information via a service called CrimeDex, didn’t say whether this shimmer was accompanied by a component to steal card PINs, such as a hidden camera or PIN pad overlay.
Here’s a look at what this thing looks like while it’s sitting inside a compromised ATM’s reader (notice how the chip-reading components shown in the first image are obscured in this one by the ATM’s chip reader): Continue reading →