Question

1. Research how the virus spread and what damage it caused.
2. Write a brief essay about virus. Explain how the virus worked, how it spread, and any other essential information you can find.

Answer 1

Virus

Computer Virus is a program that copies itself.Computer virus can infect the computer and slows down. Computer virus are usually small and tiny , which are design to spread from one computer to other and to interfere Computer operation.Virus might corrupt the system or might delete the important data.Worm or Trojan is slightly harmless compared to another virus.This is the type of virus that enters the programs which exploits security.

Virus spread:

• Virus spreads from one computer to another computer ,i.e,virus is written to target network file system or shared file in order to spread from computer to computer.The person who sends the computer virus may use networking of the internet. Virus can spread through e-mails program to other computer which can even result in deleting everything on the hard disk.
• Computer viruses can be spread through attachments either by e-mail massages or even instant massages . So,it is a best practise not to check out such mails or messages when the sender is unknown because we may never know it could be virus.These attachments can be funny images or video or files it can spread to our system when that was downloaded from the internet.
• The computer virus also can be spread by via disk, CD, DVD or flash drive or other devices.

How virus work:

Virus can infected to a small section of software when the user open the program or runs the programs . It could be attached word or excel or other software programs or included in any types of files.Email viruses are totally different from the virus which uses email to infect computers.

An attachment or files in a email that open or download from your email can cause infection allowing virus to spread but an email virus cannot infect the computer unless the malicious file is open. Trojans can work by claiming a game file or other file to get inside,this will erase the contents stored on the hard drive or other drives. Trojans do not replicate like a virus but worms is able to attack the security holes and then replicate in the network to spread to other computer which uses network.

Damages includes ,it slow down the computer performance,erratic computer behaviour,data loss ,frequent computer crashes etc.

Protection:

Computer with the latest window, Window 7 have firewall , security updates / patches and windowa Defender.These devices will protect the computer and they also work as PC virus protection, but that is not enough to stop all the problems.Antivirus software such as Mac antivirus or Windows 7 antivirus are protection programs that will help to stop computer viruses. There are many free anti-virus softwares designed to run an initial scan of the computer to check if the computer is effected. It will then remove them if any of them found. It may be unable to remove the entire infection, in such case it will kept the virus in a place where it will not affect other files on the computer.

There are several types of virus such as Resident virus,Direct action virus,Overwrite virus,Boot Virus,Macro Virus,Directory Virus etc.

So in conclusion ,never download any items from a site that you do not trust or that does not have the secured server symbol .Never open attachment when the sender is not known, Set up the wireless network security and obtain a mobile antivirus. An unsecure Internet connection will create a way for hackers to try to download malicious threats. A mobile antivirus is a set up for wireless networks, whereas other antivirus software is meant for secured connections.