Millions of people around the world have become victims among others because of the swelling number of card users. Since the 1980s the number of card users has risen sharply. Data from a newspaper released in October 2016 showed the total value of using a credit or debit card on a global go to my blog in 2015 reached more than the US $ 31 trillion, up 7.3% compared to 2014. In Europe, seven out of eight transactions in 2015 it was carried out electronically alias using a credit/debit card. Credit cards and electronic payment systems are not only popular in developed countries. Adoption in developing countries has also increased thanks to services such as Paypal and the growth of e-commerce.

Types of credit card crime
There are many types of credit card crime and the types continue to grow or change along with the use of new technology in the field of electronic payments or developments in the banking world. But basically, there are two types.

The first is known as CNP, short for card-not-present. As the name implies, when a crime or fraud is committed there is no physical presence of the card. Phishing is fraud or crime usually via e-mail with the offender as if it were a financial institution asking for financial data or information, for example, account numbers, credit card numbers and even card PINs.

The second type is card-present-frauds, which is less common today but still has to watch out for. For example when sellers quietly swipe a card to the machine and save card data. This data is used to make transactions without the knowledge of the card owner. This is usually called skimming.
How to prevent fraud?

Based on research that examines sophisticated statistics and probability techniques, sequential analysis can be a powerful weapon for preventing card crime.

Card providers and banks continuously monitor card owner information and spending patterns that include the time, amount, and coordinates of each transaction. From this, a computer model was made that could calculate and deduce whether the purchase was genuine or fake.

That is why, if you suddenly buy something at a high price or to shops that are not normally visited, there is a possibility of a card being declined.

A refusal can be in the form of a direct rejection or the party that issued the card will call the card owner to ensure the ongoing transaction is genuine.