Set a password long enough for your user name. It is best to use mixed case and special symbols. Don't use pure digital passwords for memory. Don't use information related to yourself as a personal password, which is easy to be guessed by people who are familiar with you.

Don't set all passwords the same, you can add a prefix to each password. Don't work in front of the computer for more than 1 hour at a time. Don't get your eyes too close to the screen, sit up straight. Don't set the screen too bright or too dark. Breathe the fresh air outside the house properly. Don't buy online at will.

When making friends online, middle school students should not tell their real name and address, telephone number, school name and close friend information. Don't meet with netizens. If you must meet, you'd better go to a crowded place. Ignore online suitors. Do not refute or answer vulgar netizens, and treat them in a silent way.

Network security

Network security includes network equipment security, network information security and network software security, which means to protect the hardware and software of the network system and the data in the system from being destroyed, changed or leaked due to accidents or malicious reasons, so that the system can run continuously and reliably without interrupting network services. It has the characteristics of confidentiality, integrity, availability, controllability and auditability.