Computer virus | Definition | Explaination

All about Computer virus...

1. Awesomeness Computer Virus Computer Virus are malicious programs which disrupts the normal functioning of the computer system and can transfer through computers without the acknowledge or permission of the user. -Bipul Pant

2. Computer Virus

3. Computer viruses can spread into our system without any permission. So, we should always be aware before running any unknown or suspicious files. Computer viruses can also harm our whole system , they can corrupt all our files to wierd extensions and make them unusable.

4. We must be sure that the unknow file is safe to use otherwise we shouldn’t run it. If you don’t know that the file is safe, always press no.

5. Always make sure you have an antivirus software installed, if not take some advice from your seniors to download it.

6. Some examples of antivirus softwares are: Avast Secure Connection - Kaspersky -Malwarebytes

7. Stealth Virus It uses special techniques to hide its presence from the user and virus scan. The examples are Frodo, Joshi and Whale.

8. A Trojan horse or Trojan is a type of malware that is often disguised as legitimate software. Trojans can be employed by cyber-thieves and hackers trying to gain access to users' systems. Users are typically tricked by some form of social engineering into loading and executing Trojans on their systems. Trojan Horse

9. Purpose of creating virus To stop the software piracy. To entertain user by displaying interesting message and pictures. To steal data and information. To destroy data, information and files. To expose their programming ability To earn money

10. If we get any files like this , we must scan our computer and remove the virus.

11. Types of computer virus There are 5 tyes of computer virus. Boot Sector Infector Virus (Start Up Infector or Bootstrap Virus):  I nfects the bootstrap loader and the file that contains files information. C-Brain, Stone, Disk Killer etc. are some popular Boot sector viruses.   File Infector or Parasitic Virus (General Purpose Application Infector):   Infects executable files or program (i.e. files having .exe, .bin, .sys or .com extension) in the computer. Ambulance virus, Die Heart etc are the examples of file viruses.  Multi-partite  Virus :  have the abilities of the parasitic and the bootstrap sector viruses. So they are able to infect either executable files or boot sector.   

12. Types of Viruses Continue... Macro Virus (Document infector virus) :   Infects specially the documents created in Microsoft applications like MS-Word, MS-Excel, MS-Access or MS-PowerPoint. Melissa, LoveLetter etc. are some examples of macro virus .   Script Virus:   Written in script programming languages, such as VBScript(Visual Basic Script) Java Script. “HTML.Redloaf.A” and “Iloveyou” viruses are the examples of Script Viruses.