Where Does A Computer Virus Go First And Reside When It Infects A PC?

2 Answers

John Nawrocki Profile
John Nawrocki answered
Depend on the virus.

  • Some modify the boot record so that when you start your computer, you will be booting into the virus code instead of into your operating software.
  • Some hide in the keyboard key input routine. These usually record key strokes and keep them until they are requested by the author of the virus. This is a common way of stealing credit card numbers.
  • Some attach themselves to application programs by modifying .exe or .dll files and then do their work when the program is run.
  • And there are many more
Virus authors are sometimes pretty clever.
Fahad Hussain Profile
Fahad Hussain answered
Initially it comes to software files. And you will be well aware that all hardware are running by softwares.

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