How to Ensure password security in Linux

Password Security Overview

Since humans started using computers, passwords have been primarily used to restrict access to systems. Although software and hardware are constantly updated, the principle of relying on passwords to protect the system remains unchanged. It seems common to choose a password, but the user's system security is completely password-based.

A simple and easy-to-guess password opens the door to the System-once an attacker obtains the password, the password can be directly driven in. A strong enough password takes several years to crack, and a weak password has no secrets within one minute. The following issues involve password settings:

● Whether to set a password based on public standards;

● Whether the password is encrypted;
　　
● Whether the password uses shaow;

● Answering the above questions will help you understand whether the Linux system password is secure.

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