Viruses And Antivirus Computer Science Essay

viruses And Anti calculator calculator virus estimator Science EssayIn this report, you will find the burning(prenominal) things that needed ab break viruses and antivirus. It covers the different grapheme of viruses. For instance, file viruses and Macro virus. These merchantman affect any formation info. Furthermore, it covered the history of viruses, how do viruses penetrate? and latest viruses prevalent in the creation .The computers network has cause very wide interconnecting to any part in the global. thitherfore, any networks connected to the Internet and without any auspices infrastructure becomes vulnerable to any attack from mass who attempt to damage them by sending viruses. glance overy reckoner Virus is small softw ar architectural plans that can vitiate or attack a computer and networks by making copies of itself or by executing , replicate itself without knowledge .It is called Computer Virus because it shares whatsoever of the features of biologic viruses .The dangers of this virus that it can be modification or deletion data and attach itself by use software, paperss and files to find in your computer. It creates a lot of problemsThe Creeper virus was first detected on ARPANET, the ancestor of the Internet in the early 1970s. Creeper was an experimental self-replicating schedule written by Bob doubting Thomas at BBN in 1971. Creeper used the ARPANET to taint DEC PDP-10 computers tally the TENEX operating system. Creeper gained access via the ARPANET and copied itself to the remote system where the message, Im the creeper, catch me if you can was displayed. The Reaper program was created to delete Creeper. A program called R other(a) J was the first computer virus to appear in the wild that is, outside the single computer or lab where it was created.citation needed Written in 1981 by Richard Skrenta, it attached itself to the Apple DOS 3.3 operating system and pass on via floppy disk.6 This virus was created as a pra ctical joke when Richard Skrenta was still in high school. It was injected in a game on a floppy disk. On its 50th use the Elk Cl onenessr virus would be activated, infecting the computer and displaying a short poem beginning Elk Cloner The program with a personality. http//en.wikipedia.org/wiki/Computer_virus billThe first computer virus called Brain which created by two brothers who were running a computer computer storage in Pakistan in 1986. They weaned a program that could spreading form PC to a nonher(prenominal). Brain was distress less because it doesnt delete the files in the computer and move on . In addition it is too flabby to be dish aerialovered by the septic users by noticing the changed volume label .After Brain, on that point were many other viruses developed much(prenominal) as Cascade, Alameda , Jerusalem and Lehigh . These viruses were more dangerous than Brain because they were able to infect .COM and .EXE files piece Brain can infect the boot sector .I n 1992, the first virus came to infect documents and spreadsheets by dint ofout Microsoft contribution which is called Macro virus . The Macro is a group of user commands that can be stored and run to attain . It can infect Microsoft Word or Excel on a PC and also spread to another operation system such as Macintosh. It can be also repetitive tasks at heart one application, and it is very speeded to share documents in the midst of users .When the internet became more heap used this is a applied science and also became more advanced but unfortunately , it is also helping these viruses to spread more and infect more users are used the internet through the emails such as Melisse virus . The Melisse virus is one of the document viruses that forward itself by emails. It is used the Outlook program to send an email attachment such as Microsoft Word document to anyone . After that lots of viruses are spreading through emails in the world such as Love Bug , Love Letter, I Love You e tc.3.0. Type of virusesRecently, some of the viruses are increased through the internet. People who create them, they may attached viruses to email and distribute them everywhere. There are more than one virus that can replicate itself and destroy data or computer. They are different in shape and functionality. Below are the type of virusBoot Virus This type of virus can infect floppy disk. Also, it infect boot records or master boot records in computer hard disks. recitations of boot viruses include Disk Killer and Stone virus.Program viruses These kind of viruses infect executable program files running in the computer such extensions like (.BIN , .COM , .EXE and .SYS) files. Example of program viruses sunshine and Cascade.FAT Virus This virus attack section of the hard disc where essential files are stored and it can be deleting files system.Parasitic Viruses or File viruses When you first run a program infected with a Parasitic virus, the virus is started first. The computer op erating system sees the virus as part of the program you running and gives the virus the same(p) right as the program. This right let the virus to copy itself.Macro virus This virus attack Microsoft Word documents. It is easily increase for any PC just by email. Example of macro viruses Relax, Melissa.A and Bablas.Worm it is a program similar to a virus. It is able to replicate itself and deployed across the computer network. Examples of worms include PSWBugbear.B, Lovgate.F, Trile.C, Sobig.D, Mapson.4.0 How Do Viruses Spread?Computer viruses are programs that must be triggered or somehow penalize before they can infect your computer system and spread to others. Examples include opening a document infected with a macro virus, booting with a diskette infected with a boot sector virus, or double-clicking on an infected program file. Viruses can then be spread by sharing infected files on a diskette, network drive, or other media, by exchanging infected files over the Internet via e-m ail attachments, or by downloading questionable files from the Internet.http//www.hawaii.edu/itsdocs/gen/virus/Spread5.0 Latest viruses 6.0 Anti-virus softwareAnti-virus Software is a program installed onto your computer. It helps protect your computer from viruses and also can scan, detect and remove the viruses. It is supported by firewall software (which protects against hackers and some viruses) and can do several functions to protect your computer from viruses such as It protects against Viruses ,Spyware , Trojan horses and Warms. It protects against web base attacks and latest threats. It helps secure and monitory your network. It prevents others from taking control of your computer and using it to attack other computers . And there are other functions etc .7.0 Best antivirus prevalent in the world McAfee Antivirus . ESET NOD32 Antivirus . Norton 360 . Avira Antivirus . Kaspersky Internet Security . AVG Antivirus . Trend micro Antivirus .Note You can see the classification o f the ten best anti-virus programs in 2009 by http//anti-virus-software-review.toptenreviews.com/8.0 Prevention of virus infection1- Check all the disks( CDs,HDD,Floppyetc) that were used in other PCs before using them.2- Non-implementation of any program is taken from public networks such as the Internet before the examination.3- The use of reliable software, or licensed.4- lend oneself a parole to prevent hackers to access in your PC or copy important data .5- To keep multiple backup copies of all your files before installing any new programs.6- Processing computer with an anti-virus and always updated to ensure that detect new viruses.7- Always updated operating system and support it by the windows protector .8- Do not open any email does not know the sender .9.0 Literature look intoThere are a lot of researchers have written about computer virus and antivirus 1- Ferbrache, David. Pathology of Computer Viruses. Germany Springer-Verlag, 1992.Fites, Philip, Peter Johnston, an d Martin Kratz. The Computer Virus Crisis. New York Van Nostrand Reinhold 1992.http//www.answers.com/topic/computer-virus2- See F. B. Cohen, A Short material body on Computer Viruses (2d ed. 1994) G. Smith, The Virus Creation Labs A Journey into the Underground (1994) W. T. Polk et al., Anti-Virus Tools and Techniques for Computer Systems (1995) M. A. Ludwig. The Giant ignominious Book of Computer Viruses (2d ed. 1998) P. E. Fites, P. Johnston, and M. P. J. Kratz, The Computer Virus Crisis (1999).http//www.answers.com/topic/computer-virus3- Naming and Classifying Computer Viruses in 1996 by David B. Hull, Ph.D.http//home.earthlink.net/colobus/vclassif.htm4- Open Problems in Computer Virus ResearchSteve R. WhiteIBM Thomas J. Watson Research Centersiege of Yorktown Heights, NYUSAPresented at Virus Bulletin Conference, Munich, Germany, October 1998http//www.research.ibm.com/antivirus/SciPapers/White/Problems/Problems.html5- A history of computer viruses IntroductionHarold Joseph up land FICS, FACM, Editor-in-Chief EmeritusAvailable online 10 June 1998.http//www.sciencedirect.com/science?_ob=ArticleURL_udi=B6V8G-3SX269W-2P_user=10_rdoc=1_fmt=_orig=search_sort=d_docanchor=view=c_searchStrId=1130622556_rerunOrigin=google_acct=C000050221_version=1_urlVersion=0_userid=10md5=21efd2423b0eb4ebd32af5040db0252e10.0 Methodology10.1 The questionnaireThe questionnaire for this survey was making to find out about virus and antivirus . Usually it is distributed among the large number of raft to know to find out the solution and their attitude on the virus and antivirus .There were 13 questions were printed and distributed for mickle to know what they think about virus and antivirus .10.2 FindingThis questionnaire contains a series of questions about the virus and antivirus .I asked public of people and taking their views on this subject. So, I institute the following results1- Do you have any conception about Computer Virus? both the public of people knew very well what is the computer virus? Around 100% have the idea about computer virus.2- Is your PC infected by virus ?Most of the people their computers infected by the virus .3- Do you make backup copies of your files ?The majority of the people are doing backup copies between monthly and other days .Furthermore, there is less of people doing backup copies through daily or never doing .4- Which is antivirus do you use ?Around 33.37% of the people are using McAfee antivirus and the same percentage using another antivirus .In addition,26.65 % their using Kaspersk Internet Security and 6.61% using ESET NOD32 .5- Do you buy the original anti-virus?Around 80% of the people are purchase the original copy of antivirus and unfortunately , percentage of the remaining people are buying non-licensed versions.6- How often do you update your anti-virus ?There are high percentages in terms of update antivirus between daily and weekly. On other hands , around 20% of people are updated antivirus .7- Do you ser ve virus scan for the CD or Flash disc before you use it?Most people perform virus scan for the CD or Flash disc before use it in computers and About 13% of people ignore virus scan for the CD or Flash disc .8- Do you use the Internet service daily ?There is a large percentage of people use the Internet service on a daily and depend on it.9- Are you protect your files by using a password ?54% protecting files by using a password and less percentage not protecting files .10- Do you get any virus while you read any Email?53% of people infected through the virus while read Email .11- Would you like to create viruses?Most people do not tend to create viruses and less than 27% of people tend to create viruses .12- Do you think that antivirus companies create computer viruses?It was found that 73% of the people think antivirus companies are created computer viruses because get to a lot of money through buy antivirus and using it to protect their files from a virus .13- Would you like to u se more than one anti-virus in your PC?It was found that 93% of the people do not want to use more than one antivirus in the same PC because make delay for performance PC and reduce of speed .11.0 ConclusionsThis report discussed about Virus an Antivirus . I gathered information through Internet ,some books and my colleagues. According to the survey, I Found that the viruses grow and spread very quickly, but peoples awareness and knowledge of the risk of viruses make them eager to stop the spread of viruses through using antivirus software and making backup copies of the files .Furthermore, Using security programs such as firewall or windows defiance are helping to protect your computer from viruses .In addition, this report covered the types of viruses and dangerous on the PC. any day more and more viruses, but in the end is getting rid of them.12.0 RecommendationsI root on all to use antivirus software and make updating on the daily through an internet. Moreover, do not open any Email does not know the sender and perform virus scan for CD or Flash memory before use it in your computer. And also to be safe, use the original copy of your software.13.0 Bibliography