when setting the credit card password, you should follow the principle of "one for two, three for no".
One-card-one-secret system
Credit cards, bank cards, Alipay, Taobao, private messages, Weibo, WeChat, etc. There are too many places where passwords need to be set. Correspondingly, the network environment is seriously unsafe, and even for its own reasons, it may be hacked and leaked. Therefore, a card and an account password are very important. Although one card and one password seem troublesome, it is still very safe to ensure the environment for using credit cards and the confidentiality of emergencies. Even if it is leaked, don't worry about the risk of other accounts being leaked.
two codes: can be combined into alphanumeric symbols; Can be arbitrarily combined into symbols.
It can be used in combination with alphanumeric symbols: the password setting should be as complicated as possible, pure letters or numbers are the easiest to crack, and it is more difficult to crack the combination of numbers and letters, while some "#&; & It is more difficult to decipher punctuation marks such as *. ".
it's best to play it at will: for example, enter continuous letters or symbols "asdfghj" on the keyboard, such as the combination of your favorite characters' names and numbers, such as haizei1988/smith, and so on.
three don't: please don't set your password to your ID number, mobile phone number or birthday number.
Personal information such as ID number, mobile phone number and date of birth should be avoided in password setting, because on the one hand, passwords containing such information are the easiest to be cracked, and on the other hand, in case of the unexpected incident of 1236 user information disclosure, those who are interested can obtain your ID number and other personal information through the password, so as to use these information to commit illegal acts and cause serious losses to cardholders.