fraudulently using someone else's credit card to engage in fraudulent activities, the amount of which is more than 5, yuan, constitutes the crime of credit card fraud. Using forged credit cards, credit cards fraudulently obtained with false identification, invalid credit cards or fraudulent use of other people's credit cards to engage in credit card fraud activities, the amount of which is more than 5, yuan but less than 5, yuan, shall be deemed as "a large amount"; If the amount is more than 5, yuan but less than 5, yuan, it shall be deemed as a specified "huge amount"; If the amount is more than 5, yuan, it shall be deemed as the specified "extremely huge amount". 1. "Fraudulent use of another person's credit card" includes the following situations

1. Picking up another person's credit card and using it;

2. defrauding others of their credit cards and using them;

3. Stealing, buying, defrauding or obtaining other people's credit card information by other illegal means, and using it through the Internet, communication terminals, etc.

4. Other situations of fraudulent use of other people's credit cards. Picking up another person's credit card and using it, defrauding another person's credit card and using it all constitute the crime of credit card fraud. Second, several points for attention in handling credit cards

1. Never touch small loans (especially those for credit reporting)

2. Never apply for cards frequently in a short period of time

3. Don't trust others' invitation to handle the card link easily

4. Don't keep too many low-limit credit cards

5. Don't blindly apply for a card Legal basis: Article 54 of the Provisions on the Standards for Filing and Prosecuting Criminal Cases under the Jurisdiction of Public Security Organs, if any of the following circumstances is suspected, it shall be filed for prosecution: using forged credit cards, or using credit cards fraudulently obtained with false identification, or using invalid credit cards, or fraudulently using other people's credit cards to engage in fraudulent activities, with the amount of more than 5, yuan.