Per Hyosung:

“Hyosung was recently made aware of a small number of jackpotting incidents involving Hyosung Retail ATMs. While jackpotting efforts are rarely successful, we are working with local law enforcement and the U.S. Secret Service regarding certain specific incidents where two different types of jackpotting events appear to have been successful.

In one of these events, a CDU security option, CDU Binding, was not enabled on the machine. In a separate event, SSL was not enabled on the ATM.

For protection against outside attempts to install potentially harmful devices and applications on your ATM, we strongly recommend to all of our customers to: Enable the CDU Binding option on all of their WinCE 6.0 and WinCE 7.0 Retail ATMsEnable SSL/TLS Encryption with Certificate Validation enabled on each ATM, which is different from only having SSL enabled on a wireless modemInstall the latest software updates as released by Hyosung   As long as the ATM is either WinCE 6.0 or WinCE 7.0, the process to enable to CDU binding feature is straightforward. After logging into the ATM, navigate to the “Customer Setup” page and follow the steps below: Select “Optional Function 2″Select “Device Option”Select “CDU Binding Option” to “Enable”Press Cancel four times to exit the Operational Menu”