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Comparison of Viruses Malware, Worm and Trojan

Malware

It is software that is harmful to a system. And it is unwanted software that disturbs computer. And don’t allow the computer to run properly.

There are 3 types of malware.

  1. Virus
  2. Worm
  3. Trojan

Virus

When a computer executes, it makes a copy of itself. and where it executes it to make it own file and own code there. One virus makes more child viruses and it continues.

It attaches to the programme. It doesn’t disturb the computer until that programme run.

Classification of the virus

1          Malicious

2          Neutral

3          Helpful

Malicious Virus

Neutral Virus

Helpful Virus

The virus did not run alone it attaches itself with a programme. Whenever programme runs it executes.

Trojan horse

It runs alone without any software.

They seem to something interesting and it talks about the user interest but when it executes. Disturb all the result and data.

Worm

It is sub-programme of the virus. It is the same as the virus but the virus spreads when a programme runs where the virus is attached. But worm runs without running a programme. It makes the child itself.

How to protect system form malware.

  1. Don’t download a pirated version of any software or game.
  2. don’t click on ads
  3. Install an antivirus.
  4. Always turn on the firewall.
  5. don’t open unauthorized Emails.
  6. don’t download from an unknown source.
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