Signature Card: The most fearful thing is that someone else will sign a bill under your name. It is understood that as of the end of June this year, my country had issued 24.99 million credit cards, and more than 90% of them adopted the internationally used signature system. Credit card holders only need to sign the purchase order when spending within the consumption limit specified by the card issuer. Because it is simple and convenient, it creates opportunities for some criminals to steal cards and withdraw money under false names. The person in charge of the credit card department of a bank in Shenzhen believes that no matter what kind of credit card, as long as it is used in public, there is no complete guarantee that there will be no loopholes in the security of the credit card. Some cashiers operate irregularly when swiping cards for consumption and do not check signatures at all. Once fraudulent use or fraud occurs, the safety of funds is not guaranteed. At present, the business system, risk control technology and real-time fraud detection technology supporting "signature credit cards" in mainland my country are still not very popular. In addition, some credit card consumers accidentally lose their credit cards, which greatly increases the risk of signature credit cards. . According to statistics from the Credit Card International Organization from the second quarter of 2002 to the third quarter of 2003, my country's card issuing banks suffered losses of US$248,000 in stolen and counterfeit cards. Shenzhen's credit card business has developed in the past year or two. The credit limit of credit cards is relatively low, and encryption is required for higher consumption limits. Therefore, there are very few credit card thefts. Passwords are widely used in consumer places and are easy to lose. Password cards: if the password is broken, you may lose everything. In view of the frequent problems that signature credit cards have when cardholders use them, China UnionPay has officially expressed its support for the promotion of "password credit cards". Shenzhen Development Bank is the first bank in the country to use credit card password for consumption. Tian Zhuoya, deputy general manager of the bank's credit card center, said in an interview with reporters that by adding a password on top of the signature, this "double insurance" can effectively prevent crime and minimize the losses of the bank and cardholders. Currently, 98.3% of the bank’s credit card holders opt for crypto credit cards. So far, due to the use of encrypted credit cards, the company has not had a single dispute involving cardholders denying transactions or cases of counterfeit cards. Does encryption ensure credit cards are 100% secure? Some consumers and bankers are skeptical. The reporter learned from the Shenzhen Luohu District Consumer Council that in August this year, a credit card holder used a bank’s encrypted credit card to purchase several things in a shopping mall, and later found that more than 6,000 yuan had been crossed out from the card. After investigation, it was found that when he entered the password, the password may have been stolen by the person next to him, and the cash was stolen several times in a row. Chen Yan, a person in charge of China UnionPay Shenzhen Branch, told reporters that signature credit cards and encrypted credit cards each have their own advantages and disadvantages, but generally speaking, signature and encrypted credit cards are more secure. It is true that it is easy for signatures to be signed by someone fake, or that the card is lost and the card is not immediately reported as lost, and the person who has stolen the card takes away the cash, but encryption does not mean that it is foolproof. She said that the widespread use of passwords in consumer places can easily lead to loss of confidentiality, leading to greater fraud. In addition, many people now have many cards, and sometimes it will be more embarrassing if they forget their passwords. Countermeasures ■ Banks: Launch a formal loss reporting service with immediate effect ■ Shopping mall cashiers: Be sure to verify signatures when swiping cards ■ Cardholders: Do not disclose card numbers and passwords casually In order to avoid credit card cash being trapped or passwords being stolen, some banks have introduced the world's most advanced card issuance systems. All types of transactions are subject to parameter control. When improper consumption is discovered, the card issuer will contact the real cardholder to verify the recent transactions and confirm the validity of the card. In terms of preventing general security loopholes, the People's Bank of China, ICBC, China Merchants Bank, etc. have all launched official loss reporting services with immediate effect. As long as cardholders find that their credit cards are lost, they should immediately call the card-issuing bank to report the loss. Once the loss report takes effect, all lost funds will be lost. The consequences will be borne by the bank. In addition, in order to strengthen the identification of card-holding consumers, some banks have also learned from foreign experience and put forward suggestions for reporting loss and stop-payment applications when cardholders are unable to provide card numbers or ID numbers, so as to prevent card holders from using only One card can "swipe" all over the world. In order to reduce fraudulent card consumption, card-issuing banks require cashiers in shopping malls to verify the signature of the credit card holder when making purchases. Wang Bin, General Manager of the Shenzhen Branch of the Industrial and Commercial Bank of China Credit Card Center, reminded credit card consumers that some people who like to chat online must be careful not to disclose their ID number, card number and password casually. Nowadays, many criminals use counterfeit cards to withdraw cash, which requires joint rectification by banks and public security departments. Case: Card lost for 3 hours and RMB 18,000 stolen. For Mr. Zhao, who works in a foreign trade company in Luohu, October 20th was a very painful day. At about 12 noon that day, he accidentally lost his wallet when he got in the car. There was a credit card with a maximum withdrawal limit of 50,000 yuan and several other bank cards in it. It was only when he got his ID card after work in the afternoon that he realized his wallet was missing. He immediately called the card-issuing bank to report the loss, but when the loss report was successful, it had been more than three hours since he lost his wallet. Later, he went to the credit card center to check his account and found that 18,000 yuan had been taken away in just over three hours.