Check one by one. For unused credit cards, first check whether the expiration date has passed. If there is, you can ignore it. Otherwise, contact the issuing bank to confirm and apply for cancellation.
Pay attention to protecting personal information in the future to ensure that information is not leaked. Avoid unnecessary trouble.
Legal basis: Interpretation of the Supreme People's Court and the Supreme People's Procuratorate on Several Issues Concerning the Specific Application of Law in Handling Criminal Cases of Impairment of Credit Card Management.
Article 3 Whoever steals, buys or illegally provides credit card information of others, which is enough to forge credit cards that can be traded, or causes others to conduct transactions in the name of credit card holders, involving more than 5 credit cards 1 card, shall be convicted and punished for the crime of stealing, buying or illegally providing credit card information in accordance with the provisions of the second paragraph of Article 177-1 of the Criminal Law; Involving more than 5 credit cards, it shall be deemed as "a huge amount" as stipulated in the first paragraph of Article 177 of the Criminal Law.
Article 4 Whoever makes or provides false credit certification materials such as property status, income and position for credit card applicants, which involves forging, altering, buying or selling official documents, certificates and seals of state organs, or forging seals of companies, enterprises, institutions and people's organizations, shall be investigated for criminal responsibility, and shall be punished as crimes of forging, altering, buying or selling official documents, certificates and seals of state organs and crimes of forging companies and enterprises respectively in accordance with the provisions of Article 280 of the Criminal Law.