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TYPES OF COMPUTER VIRUS

                 There are various types of computer viruses that infect the computer in different ways. The most
                 commonly known categories of computer viruses are:
                    Program File Virus                  Boot Sector Virus

                    Macro Virus                         E-mail Virus
                 Let us learn about these in detail.
                 Program File Virus

                 A program file virus, also known as a file-infecting virus, attacks certain types of files on your
                 computer, like .exe, .com, and .sys files. These are the files that run programs. When you open a
                 file with this virus, it can make the file unusable or damage it. The virus then starts working and
                 can spread to other files on your computer. Once it's active, it stays in the computer's memory
                 and can infect more programs. This type of virus is sometimes called a file injector. Examples of
                 these viruses include Jerusalem and Cascade.
                 Boot Sector Virus


                 A boot sector virus is a very harmful type of virus that infects the boot sector or Master Boot
                 Record (MBR) of hard drives and floppy disks. The boot sector is a special part of the disk that
                 helps start up the computer. If a computer gets this virus, any disk that is connected to it can also
                 become infected. Examples of boot sector viruses include Michelangelo and Stoned.
                 Macro Virus

                 A macro virus is a type of computer virus that targets specific types of documents, like Word or
                 Excel files. When you open an infected document, the virus activates and can spread to other
                 documents. Sometimes, a macro virus can even send itself as an email attachment to contacts in
                 your address book. Examples of macro viruses include Melissa and Bablas.

                 E-mail Virus

                 An email virus spreads through email messages, often as infected attachments. When you open
                 an email or attachment that has this virus, it activates and starts working in your computer's
                 memory. Even though it might seem simple, an email virus can delete files, destroy information,
                 and cause your computer to crash.

                    HOW DOES A COMPUTER GET INFECTED WITH A VIRUS?

                 Computer viruses can spread in several ways, including:
                    Using infected CDs or pen drives.

                    Opening an email attachment that has a virus.
                    Downloading a program from the internet, pen drives, CDs, or DVDs that contains a virus.
                    Running an infected program, like a game or screen saver.

                    Through local computer networks.







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