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    7.2 HOW TO PROTECT YOUR SYSTEM

                         Aryan: Then, how can we protect our system?

                         Gowri: There are different ways to protect our system:
                                  Keep The Operating System up to date.

                                  Use a Firewall.

                                 Install Antivirus  Software: Antivirus  software is crucial for preventing virus attacks,
                                 but this strategy only works if users keep their software up to date.
                                 Use the latest version of your web browser.

                                 Don’t fall for Phishing emails: Emails that appear to be from a recognisable online service,
                                 asking you to log into a site to confirm personal details, are almost always fake.

                                 Create backup of all of your data.
                                 Always set a password on your system so that no unauthorised person can use it in your
                                 absence.

                         Aryan: Why computer viruses are called viruses?
                                            Gowri: Computer viruses are called viruses because they share some of the
                                         traits of biological  viruses. A computer  virus  spreads  from one computer  to
                                         computer just like a biological virus passes from person to person. Similar to
                                         the way a biological virus needs a cell to ride, a computer virus must require a
                                         program or document to launch. And once  computer virus starts running, it can
                                         infect other programs or   documents as well.

                      7.3 ANTIVIRUS SOFTWARE AND EXAMPLES
                         Aryan: OK, What is Antivirus Software?

                                             Gowri:  An Antivirus Software is a program or set of programs  that are
                                         designed to prevent, search for, detect, and remove software viruses, and other
                                         malicious software like worms, trojans, adware, and more.
                                         Examples  of  Antivirus  software  are  Norton  Antivirus  Plus,  Avira  Antivirus,
                                         Kaspersky, Quick Heal etc.

                      7.4 FIREWALL AND ITS USE

                         Aryan: Now Please tell me something about Firewall.
                          Gowri:  A Firewall is a  system  designed to prevent  unauthorised access  to
                      or from a private network.  All messages  entering or leaving the intranet  pass
                      through the firewall, which examines each message and blocks those that do not
                      meet specified security criteria.

                         Aryan: Is it a hardware device?
                         Gowri: Firewalls can be either hardware or software, but the ideal firewall configuration consists
                      of both.

                    72                         KVS DELHI REGION 2025

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