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What Is a Computer Virus?

A computer Virus is a computer program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes.

 

What are the signs of Computer infection?

  • Computer functions slower than normal and freezes often
  • Computer restarts itself
  • Uncommon error messages, distorted menus and dialog boxes appears.
  • Applications on you computer fail to work correctly.
  • Fail to print correctly.

 

What are the areas Viruses infect?

  • Disk Sectors
  • All sort of files
  • Directories (Clusters)
  • Batch files or NTLDR
  • Source code
  • Program language files
  • Screen Savers & theams
  • Creates garbage and consume memory and disk space

 

What is the Nature of Viruses?

Virus can be Resident and Non resident.

  • Resident Viruses reside into memory of the computer and activate whenever the OS performs a specific function and infect files and other type of data. It finds a method to hide in the memory.
  • Non Resident virus is not stored in the memory and hard drive, but it is in executable file that infects a computer each time it runs. EXE files are an example of non resident virus.

 

What are the types of Viruses?

  • Boot Viruses
  • Program Viruses
  • Stealth Viruses
  • Polymorphic Viruses
  • Macro Viruses
  • Active X & Java controls Viruses
  • Tunneling Viruses
  • Network Viruses
  • Malware

 

Note: These were brief information about Computer Viruses. if any one is interested in more information regarding viruses or its types you can leave your comment here. i will try to provide all the info i have.



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Comment by Abdul Qayyum on November 10, 2011 at 5:05pm

Malware is a type of virus? I think its a broader term that includes every malicious program containing malicious code designed to cause trouble or steal information from the victim computer and virus is just one of those programs. My view=Virus is a type of malware and not vice versa.

Comment by Tahir Ihsan on November 4, 2011 at 10:52am

wo konsa virus ha jo network ko damage kerta hai? aur is ka solution?

Comment by muhammad abbas on November 1, 2011 at 10:27pm

AOA

Dear brothers and sisters

Due to some kind of viruse most of my important data drained(washed)

please let me know and educate how this wil be recovered for free.is there any software to recover this data

 

i will be very thankful to you.

Muhammad Abbas



Comment by imran on November 1, 2011 at 8:30pm

Comment by Red Rose *** on November 1, 2011 at 1:23pm

some time chat is not disply on web why ??? i refresh and and use compability wiew what i do for this tell me

Comment by Red Rose *** on November 1, 2011 at 1:21pm

how we remove virous in my computer and which type of virous is hld on my computer ????? for more reply tell me plz

Comment by biLmLik on November 1, 2011 at 12:09am

hOw it can b created and xup alsO how antiviruses are created......

 

Comment by asifa parveen on October 31, 2011 at 8:48pm

how can we safe our computer from virus? plz tell us  more about virus with thanks

Comment by Red Rose *** on October 31, 2011 at 1:07pm

inmy computer have virus which type i dont know?? but an error is also come aftr 2 to 3  second but i shft it left and do my work. tell me how i remove this virus ???????? 

Comment by Ansar Khan on October 31, 2011 at 11:29am

lakin ess ka koi best hall batao na

 

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