The crooks are really getting good.

Snopes.com http://www.snopes.com/ says  this is true.  

Link to this scam: http://www.snopes.com/crime/warnings/creditcard.asp

This one is  pretty slick since they provide YOU with all the information, except  the one piece they want.

Note, the callers do not ask for your  card number; they already have it. This information is worth reading.  By understanding how the VISA & MasterCard Telephone Credit Card  Scam works, you'll be better prepared to protect yourself.

One  of our employees was called on Wednesday from 'VISA', and I was called  on Thursday from 'Master Card'. The scam works like this: Caller:  'This is (name), and I'm calling from the Security and Fraud  Department at VISA. My Badge number is 12460. Your card has been  flagged for an unusual purchase pattern, and I'm calling to verify.  This would be on your VISA card which was issued by (name of bank).  Did you purchase an Anti-Telemarketing Device for $497.99 from a  Marketing company based in Arizona ?'

When you say 'No', the  caller continues with, 'Then we will be issuing a credit to your  account. This is a company we have been watching and the charges range  from $297 to $497, just under the $500 purchase pattern that flags  most cards. Before your next statement, the credit will be sent to  (gives you your address), is that correct?'

You say 'yes'. The  caller continues - 'I will be starting a Fraud investigation. If you  have any questions, you should call the 1- 800 number listed on the  back of your card (1-800-VISA) and ask for Security.'

You will  need to refer to this Control Number. The caller then gives you a 6  digit number. 'Do you need me to read it again?'

Here's the  IMPORTANT part on how the scam works.
 The cal ler then says, 'I need to verify you are in  possession of your card'. He'll ask you to 'turn your card over and  look for some numbers'. There are 7 numbers; the first 4 are part of  your card number, the next 3 are the security Numbers that verify you  are the possessor of the card. These are the numbers you sometimes use  to make Internet purchases to prove you have the card. The caller will  ask you to read the 3 numbers to him. After you tell the caller the 3  numbers, he'll say, 'That is correct, I just needed to verify that the  card has not been lost or stolen, and that you still have your card.  Do you have any other questions?' After you say No, the caller then  thanks you and states, 'Don't hesitate to call back if you do, and  hangs up.

You actually say very little, and they  never ask fo r or tell you the Card number. But after we were called on  Wednesday, we called back within 20 minutes to ask a question. Are we  glad we did! The REAL VISA Security Department told us it was a scam  and in the last 15 minutes a new purchase of $497.99 was charged to  our card.

Long story - short - we made a real fraud report and  closed the VISA account. VISA is reissuing us a new number.
 What the scammers want is the  3-digit PIN number on the back of the card Don't give it  to them. Instead, tell them you'll call VISA or Master card directly  for verification of their conversation. The real VISA told us that  they will never ask for anything on the card as they already know the  information sin ce they issued the card! If you give the scammers your  3 Digit PIN Number, you think you're receiving a credit. However, by  the time you get your statement you'll see charges for purchases you  didn't make, and by then it's almost too late and/or more difficult to  actually file a fraud report.

What makes this more remarkable  is that on Thursday, I got a call from a 'Jason Richardson of Master  Card' with a word-for-word repeat of the VISA scam. This time I didn't  let him finish. I hung up! We filed a police report, as instructed by  VISA. The police said they are taking several of these reports daily!  They also urged us to tell everybody we know that this scam is  happening.