About password

Password is also called password, password or passcode. The original meaning of a password is a verbal password, also called "password". It is a confidential string used for identity verification to protect you from visibility by others. Privacy and prevent unauthorized operations to achieve the purpose of protecting privacy and preventing unauthorized operations.

Passwords can be simple numbers or English, such as birthday, student number, English name, etc., but such passwords are easy to guess; however, excessively complex passwords are difficult to remember. In general, a good password follows the principle of "easy to remember but difficult to guess", that is, it should not only maintain a certain degree of complexity, but also be easy to remember.

Password strength refers to how effectively a password resists guessing or brute force cracking. Generally speaking, it refers to the average number of attempts by an unauthorized visitor to get the correct password. The strength of a password depends on its length, complexity and unpredictability. Strong passwords reduce the overall risk of security breaches, but do not reduce the need for additional security measures.

The rate at which attackers submit guessed passwords is an important factor in measuring the security of a system. Some systems suspend login for a period of time after several failed attempts. If there are no other security vulnerabilities, such systems can be protected with a relatively simple password. But the system must store user passwords in some form, and when this data is stolen, there is great danger.