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Chapter – 5 : Virus and Anti-Virus, It’s Types

A computer virus is a type of malicious software (malware) designed to:

  • Infect your system (often by attaching to files or programs)
  • Replicate itself and spread to other files or devices
  • Damage or steal data, slow down your system, or cause it to crash

Viruses can spread through:

Pirated software

Infected email attachments

USB drives

Malicious websites

Antivirus software is a program designed to:

  • Detect and remove viruses
  • Prevent new infections
  • Protect your files, data, and system performance

Popular antivirus programs:

  • Windows Defender (built into Windows)
  • Norton
  • McAfee
  • Avast
  • Bitdefender

🧠 Quick Analogy:

A virus is like a flu infection for your computer.
An antivirus is like your immune system or medicine that finds and fights off the infection.

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