Thieves hacking ATM users by glueing down the "Enter", "Clear", and "Cancel" keys:

The thieves glue down the "enter," "cancel" and "clear" buttons on the keypad and wait until the customer goes into the bank for help before withdrawing money from their account.

The robbed customers have already punched in their PINs when they realize the keypad buttons are stuck. The unwitting customers either do not know that they can use the ATM touchscreen to finish their transaction, or become nervous when the keypad isn't working and react by leaving the ATM unattended...

(Via Bruce Schneier.)