VIRUSES

Chapter 1: File Or Program

• Viruses:

  • Small files that replicate by modifying other programs by inserting their own code.

  • A file is considered infected if the replication succeeds.

  • Types of viruses:

    • Trojan Horse:

      • Appears useful or entertaining but carries hidden malicious functions.

      • Some masquerade as repair tools claiming to remove threats while doing the opposite.

    • Worm:

      • Can copy and transmit itself, often more disruptive than viruses.

    • Malicious Script / Malware:

      • Varies in harm and can compromise personal information.

Chapter 2: Impact Of Computer

• Effects of Malware:

  • Can enter through fraudulent emails or hidden scripts in forms.

• Negative Impacts of Computer Infection:

  • Loss of Performance:

    • Slows down computing processes.

  • Loss of Functionality:

    • Can degrade performance to the point of rendering the computer unusable.

  • Exposure to Dangerous Software:

    • Some malware entice downloads of more harmful software.

  • Loss of Information:

    • Deletion of stored files or data.

  • Breach of Privacy:

    • Personal information may be compromised.

Chapter 3: Theft Or Fraud

• Identity Theft:

  • Some viruses gather personal information for identity theft or fraud, which can lead to financial losses.