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Good question.
Viruses can enter computers in many ways. Once a virus has entered a system, it will generally hide until it is unknowingly run by the user. A virus will not act until it has been run or some pre-established condition has been met, such as a specific date. The effects of a virus may not be noticed for some time after it has infected a computer.
Viruses can infect several components of a computer's operating and file system including:
- System Sectors/Boot Records - Viruses can infect the parts of the system that are used to run programs and perform functions such as start up and shut down.
- Files - Viruses can infect program files. These viruses stick to program files such as .com, .exe, .sys, etc. Some viruses hide in the memory of the computer at first, while others simply attack a specific software program, such as Microsoft Word.
- Companion Files - Viruses can create companion files that are a special type of file that adds files that run on the hard disk.
- Macros - Viruses can infect macro or data files.
- Disk Clusters - Viruses can infect files through the disk directory.
- Batch Files - Viruses can use batch files to infect a computer.
- Source Code - Viruses can be in additional code that is added to actual program source code.
- Visual Basic Worms - These worms use the Visual Basic programming language to control a computer and perform tasks.
What else can I help you with?
17 What is a computer virus?
A computer virus is a malicus software that enters your computer via email or downloading files. For more information visit: http://en.wikipedia.org/wiki/Computer_virus dont worry, the addres is not a virus.
How does a virus enter in your system?
A virus enters the system either by internet (email, downloads, or giving out info) or by infiltration of your computer (a flash drive, black bag job, writing the computer virus on your computer). Internet viruses are more common, as they are easier to spread.
What stage is it when a virus enters a host cell?
The virus enters the host cell in the penetration phase.
What viruses travel from computer to computer on their own?
No virus is alive, therefore it can not more on its' own.
What is the lifecycle of a computer virus?
A computer virus typically starts with the infection phase, where it enters a system. It then replicates itself to spread to other systems, followed by the activation phase when it executes its malicious payload. Finally, the virus may enter a dormancy phase where it remains undetected or gets removed by antivirus software.
What does a virus has?
a virus includes a script which overwrites your computers needed files. This can be your operating system, a startup file (e.g: a hive file) or many more sutem files.
Does a computer with no display have a virus?
Every computer could have a virus but if you use your computer carefully it can be impossible for the virus to come to your computer.
What is a virus what can it do to your computer?
A computer virus is a type of malicious software designed to disrupt normal system functions. It can spread through files, emails, or downloads and hides inside programs until activated. A virus can: Slow down your system or cause frequent crashes. Corrupt, delete, or steal files and data. Record personal information like passwords or banking details. Spread to other devices through networks or drives.
What are discussion forums which focus on computer virus issues called?
Virus-L and computer virus are discussions forums which focus on computer virus issues
Disadvantages of computer virus?
back uses of computer virus
What is good and bad use computer and internet?
Using a computer saves trees, and internet is a great way to gain necessary information. A computer is addicting, as well as the internet, and too much reliance on a computer can result in lost files if a virus or hacker enters the system.
Once HIV enters the body it enters where?
When you get infected with HIV, the virus enters your blood and gets inside your cells that are floating around
