The faster is the technical progress developing, the more sophisticated and ingenious become the fraudsters’ attempts to turn it to their advantage. The more actively we replace cash money in our pockets with credit cards, the more ways to hack money from our bank accounts emerge. Not to become an easy prey for fraudsters, it is useful to know what techniques the violators use to steal data from credit cards. We are going to provide an overview of the fraudsters’ favorite methods of credit card fraud. How does the credit card fraud occur? Whatever scheme is used for credit card fraud, one of the main tasks of the violator is to find out a credit card PIN. For this purpose a fraudster may use: ATM overlays on a keypad. The thief sets a barely noticeable cover plate on the top of the real buttons. And this device is able to “remember” the digits of every PIN-code. A miniature camera can be attached just above the screen under the hood of the ATM and transmit images to the nearby fraudster’s laptop. Yet, it’s easy to withstand this method if to have a habit of covering a keyboard with your hand while typing the PIN (just in case). Visual observation. The PIN-code may be simply peeped by the person standing nearby. Fake ATM. They are usually installed in popular walking areas. Of course, this ATM does not give money. Instead, it records all PIN-codes of the inserted cards. It can also read data embedded in the magnetic strip. These data may further help to make a full-fledged copy of the credit card. A fake ATM is a large-scale variant usually applied for a long-term operation. It’s unlikely that anyone would turn to this method for the sake of one or two stolen PIN-codes. Once a fraudster receives a PIN-code, he needs to get a credit card data. He can steal it – the simplest method. He can defraud the card holder. For this purpose, a special plastic envelope unnoticeable at a casual glance is enclosed into the card slot. When a cardholder tries to withdraw money, the ATM does not ‘see’ the card through the envelope. It’s also impossible to return the card without knowing how to do this. Then a seemingly well-meaning stranger comes up and says that recently he has faced the same problem and tackled it by typing the PIN-code twice and pressing the enter button. After a several predictably failed attempts a victim goes to inform the bank about the incident. The fraudster gets your credit card with an envelope (he knows how to do that) and withdraws the money, using the code you just entered. These two methods have one disadvantage: the limited time for cards use. When realizing the fraudster has stolen money from the card, the customer will immediately ask the bank to block it. The more time passes after the fraudster had withdrawn the money, the better it is for him. That’s why there is one more method. He can make a duplicate of a credit card. Another one way to get necessary information is skimming credit cards. Here again, the main instrument is a pad placed over the real card slot, but not to make a credit card invisible for the ATM, but to copy the data from the magnetic strip. For the cardholder everything happens as usual: he inserts the card into the slot, enters the PIN-code, withdraws money and leaves happy. After that, the fraudsters take the skimming pad away and copy the data on their own magnetic tape (even usual video tape is suitable). To make a quite efficient duplicate of a...