Use a table to show:  How do worms differ from viruses?

S.NO

WORMS

VIRUSES

1

Worms replicate itself and slow down the computer system.

A virus is a software or program that connects to another program called as host to cause harm to the computer system.

2

This does not need any activation to trigger or spread their code.

This should be triggered by the activation of the host.

3

They are stand-alone malicious programs.

They are attached to the host files.

4

Once they breach the system, worms will self-replicate and propagate independently.

Only when the infected host file is activated and executed, the virus will run the malicious code and will replicate to infect the other files in the system.

5

Worms will make many multiple copies of itself. Each copy will rapidly self replicate and spread rapidly in the networks.

The virus also will replicate itself.

6

They can be controlled by remote.

They cannot be controlled by remote.

7

The speed of spreading worms is very high when compared to viruses.

The speed of spreading of the virus is low when compared to worms.

8

The main purpose of worms is to cause damage to the system resources.

The main purpose of the virus is to change the information.

9

They are executed due to the weakness of the system.

They are executed due to executable files on which the virus is attached.

10

Example: when a single worm is sent through email to all the contacts in the email address book. The worm itself copies and sends the replica to everyone in the receiver's e-mail address book.

Example: when a file on which virus is attached is executed, the virus file will run and will lead to spreading the virus to the other files in the system.

11

Some of the famous worms are ILOVEYOU, Michelangelo, MSBlast.

Some of the viruses are Mydoom, Stuxnet, CryptoLocker.