how do computer viruses work

People also ask


  • How does a virus infect a computer?

  • Viruses can spread through email attachments, application programs on your computer, or application programs installed from disk drives. In order to spread through a computer system, or network, a virus must be activated; meaning, the file that contains the virus must be opened, or executed in order for the virus to come to life.

  • How do viruses spread?

  • As pieces of programming code, they’re written to perform a specific function. Viruses can spread through email attachments, application programs on your computer, or application programs installed from disk drives.

  • How do spreadsheets get viruses?

  • Each time the spreadsheet program runs, the virus runs, too, and it has the chance to reproduce (by attaching to other programs) or wreak havoc. E-mail viruses: An e-mail virus travels as an attachment to e-mail messages, and usually replicates itself by automatically mailing itself to dozens of people in the victim’s e-mail address book.

  • What is the function of a resident virus?

  • It’s sole function is to duplicate itself throughout your computer system. To do this, resident viruses are programmed to load into the computer’s memory. By doing this, the virus itself is activated every time you turn your computer on.

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