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    E-mail Virus
                     An E-mail virus is a type of computer virus that transmits from one computer to another
                     through e-mail messages. Some e-mail viruses can also be transmitted as an infected
                     attachment with the e-mail message. The virus can become active when the recipient

                     opens  the  infected  email  attachment  or sometimes  even clicks  on  a  malicious  link.  It
                     sounds very simple but an e-mail virus can erase files, destroy information and cause
                     computer crashes.

                     WORMS
                     A worm is a self-propagating program that works without human intervention. It is a kind
                     of malware that uses a computer network to send copies of itself to another computer on

                     the same network.
                     Worms do not require human action to activate or spread once they are inside a network.
                     They are designed to propagate automatically without user interaction, unlike viruses,

                     which often require user actions such as opening a file.

                     How Do Worms Work?

                     They can be sent through e-mails and once we open                  Just as rust weakens and
                     these  links, they  provide  a link to malicious files             damages a bridge, a virus
                     and download automatically.  Once installed,  they                 weakens and damages the
                     replicate themselves without the knowledge of the                   functions of a computer.
                     user.

                     Symptoms of Worms

                       The memory of the computer gets occupied and storage capacity lowers.
                       Programs start crashing and do not run properly.

                       Files get deleted and replaced automatically on the computer.

                     Effects of Worms

                       They cause severe harm to the network by blocking it and reducing its speed.
                       They can change the content of the files and also delete them.

                       They can sometimes insert additional malicious software into the computer.

                       They steal data and also gain control over your computer.

                          Tick ( ) if you know this.
                          ▶   A malware that can spread itself from one computer to another.
                          ▶   A worm that uses a network to send copies of itself to another computer on the
                             same network.

                                                                                             E-Mail and Malware Safety  53

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