Computer Knowledge Chapter 11 computer and network security

Computer and network security refers to the steps and techniques followed to use digital technology safely. It is also known as cyber security or IT security.

Basic ideas:

  1. Security Objectives: Confidentiality: Information should only be viewed by authorized users. Integrity: Information must be secure without duplication or alteration. Availability: Important resources should be available when needed.
  2. Threats: Hacking Malware Phishing Dose (Denial of Service) attacks Data theft
  3. Vulnerabilities: Weak passwords Software not updated Unsecured network connection

Network Security Techniques:

  1. Firewalls: Checks incoming and outgoing data. Prevents dangerous connections.
  2. Encryption: Protects information from being read until unencrypted.
  3. IP Security (IPSec): Provides lifetime security for data connections.
  4. MT Point Protection: Integrated technology for security of various devices.

Security Methods:

  1. Password should be strong: Link: Add stair, numbers, and special symbols.
  2. Using Security Software: Anti-virus and malware protection.
  3. Software Updates: Update technical services on time.
  4. Network Certifications: Using a VPN or SSL/TLS protocol.

General Tips:

Do not open any suspicious email or link.

Use a VPN when using public Wi-Fi.

Back up your information.

Keep work and personal passwords separate.


By following these, the computer and network can be used safely.

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