how computer viruses work

People also ask


  • How does a virus work?

  • How does a virus work? The word 鈥渧irus鈥?is often used as a common term for all malicious programs, but technically a virus is a program or code that attaches itself to a legitimate, executable piece of software, and then reproduces itself when that program is run.

  • How does a computer virus attack the computer?

  • Some viruses attack the computer鈥檚 boot sector, the area on the hard drive that hosts the code for the start-up routine. Such a root code virus causes havoc because it runs itself every time you switch on the computer. Other viruses are hidden in emails, games or attached documents.

  • What happens when a virus enters a host cell?

  • If the fit between the virus and host cell is a match, the virus slips into the host cell. Once inside a host cell, the virus releases its genetic information. Then the host cell goes to work! But instead of doing its regular job, it uses its machinery and resources to make new viruses.

  • How do viruses reproduce?

  • Unlike a cell, a virus has no way to reproduce by itself. Instead, a biological virus must inject its DNA into a cell. The viral DNA then uses the cell’s existing machinery to reproduce itself.

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