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Computer Malware & Types of Malware - Weapons of 21st Century!

Malwares & Types of Malwares

The Area of Computer Malware

Malware = Malicious Software

  • Privacy loss
  • Unauthorized entry
  • Spread

Spread - Why?

  • Exploits (security) bugs
  • Weak passwords
  • Improper security practices
  • Motivation for profit
Malware = Malicious Software


  • Website
  • E-mail
  • Physical media
  • Pop-up window
  • Software
  • Illegal File Sharing
Different Type of Malware

Virus Versus Worm

  • Virus – User intervention (click, download, run or open)
  • Worm – Spread Automatically (defense by firewall) – consume bandwidth & overload web server
  • Send data to 3rd party or delete data
Related Information of Virus, Worm and Trojan Horse

Concealed Programs (Not Detected)

  • Trojan Horse
  • Rootkits
  • Backdoors
Concealed Programs

Annoying Programs

Joke Program – mouse goes reverse

Annoying Programs
  • Spam – junk email
  • Virus Hoax – warns of non-existent virus & asks to forward it
Virus Hoax

For Profit




Ransom ware

Ransom Ware

Advance Fee Fraud – offers by email

For Profit




Key logger

Key Logger


Process of Amazon Com Site
Distribution of Malware

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