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Don’t open any unknown e-mail.
                       Don’t open any e-mail attachment from unknown sources.

                       Don’t download music, program or games from unknown sources on the Internet.

                      ANTIVIRUS

                  A set of programs that identify and remove malware are known
                  as antivirus  software.  You  must have  an  antivirus  software

                  installed on your computer. It detects the virus in the computer
                  and does not let the virus copy itself on your computer system.

                  Hundreds of  new viruses  are developed every  hour. Antivirus
                  software developers regularly release updates on the Internet
                  that allow their programs to detect the latest known viruses. You

                  can update your copy of antivirus only through the Internet. So,
                  it is essential to have an Internet connection to update antivirus
                  software.

                  Some well-known antivirus programs are Norton, Quick Heal, AVG, McAfee, Symantec, Kaspersky,
                  etc.















                         Norton                    Quick Heal                    AVG                      McAfee


                      FIREWALL

                  The term ‘firewall’ originally referred to a wall intended to confine a fire or potential fire within

                  a  building.  In  computer,  a  firewall  is a  software or  hardware-based  network  security  system
                  that controls the incoming and outgoing network traffic according to a set of predefined rules.
                  A firewall acts like a gatekeeper and prevents unauthorised access to a computer network. A

                  firewall examines each data packet that arrives on the network and decides whether to allow or
                  block it based on these rules. Essentially, a firewall creates a barrier between a trusted and secure
                  internal network and an external network (such as the Internet) that is considered untrusted and
                  potentially insecure.



               24       Premium Edition-VII
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