This is real! I have read or seen pictures of this type of card skimmer, but that was from forwarded email. I know it is still happening in Thailand. It seems this kind of criminal incident happens everywhere! So, for those ATM card users, please be careful.
I found a story about a guy caught the ATM card skimmer attached before the real ATM card reader. This card skimmer will read your ATM card and record all the information into a flash memory attached in the back. It happened at a local WaMu bank. Please see pictures below.
When inserting your ATM card to the machine, please be careful. If you see that it looks suspicious or it looks like the card reader is not belong there, contact a cop and notify that local bank immediately.
Source: For more details about this, click here