Network security, cloud computing and big data security, network public opinion analysis, network security laws and regulations, advanced language programming, operating system principles, mathematical basis of information security, trusted computing technology, cryptography, communication principles, e-commerce and e-government security, database security, data backup and disaster tolerance, firewall principles and technologies.
First, about network security.
Network security means that the hardware and software of the network system and the data in the system are protected from being destroyed, changed or leaked due to unexpected or malicious reasons, and the system runs continuously, reliably and normally without interrupting the network service.
The most important thing in network security is information security, which mainly includes five aspects, namely, the need to ensure the confidentiality, authenticity and integrity of information, unauthorized copying and the security of parasitic systems.
Information security itself contains a wide range, including how to prevent the disclosure of secrets of commercial enterprises, prevent teenagers from browsing bad information, and disclose personal information.
Second, the network security tips
1. How can I avoid installing Trojan horse programs on my computer?
Install anti-virus software and personal firewall, and upgrade in time; Consider using more secure browsers and mail client tools; Do not execute any software of unknown origin; Download the attachment in the email after the unfamiliar email needs antivirus; Frequently upgrade the system and update the virus database; Do not install unnecessary website plug-ins; Regularly use anti-virus software to kill computer viruses.
2. How to protect personal information in daily life
Don't post train tickets, plane tickets, passports, photos, schedules, whereabouts, etc. Social networking software; Don't choose to automatically save passwords in public places such as libraries and print shops, or use other people's mobile phones to log in accounts. Remember to close your account when you leave. Download apps from popular app stores, not from unfamiliar and unknown app stores or website pages; Fill in the questionnaire, scan the QR code to register, and try not to use real personal information.
3. What should I pay attention to to to prevent the disclosure of personal information?
Need to enhance personal information security awareness, do not easily provide personal information to irrelevant personnel; Properly handle documents containing personal information such as express orders, tickets and shopping receipts; Personal email, online payment and bank card passwords should be different.
4. How to avoid personal information disclosure when receiving express delivery?
Because personal information is on the courier, whether the courier box is directly put into the trash can or torn off, putting it into dry garbage sorting may reveal personal information. Therefore, when you receive the courier, tear off the face sheet on the courier box.