
A credit card is one of the most important payment tools in our lives. For this reason, keeping our credit cards secure is extremely important.
So how do we secure our credit card?
The most important security measure used for credit card security is the card PIN. In particular, with Chip&PIN technology, card copying and fraudulent transactions carried out by stealing other information have been significantly reduced.
What should be considered when setting a card PIN?
- For the security of the card PIN, it should generally consist of 4 digits and must never contain consecutive numbers (such as 1,2,3,4). According to research, the most insecure PINs are those containing consecutive digits like 1234.
- Due to security rules adopted by some banks, card PINs cannot start with the digit zero (0).
- A birth date should not be set as the card PIN.
- The card PIN should be memorable, but not easily guessed by others.
- The card PIN should be changed periodically and should differ from previously used PINs.
In short, since the limit defined on a credit card is essentially our cash, the utmost care should be taken with card PIN security, which is the most important factor in protecting that limit.



