The so called threat Essay Example for Free

The so c anyed threat Essay computing machine Viruses, what argon they? Deadly programs wrote by the best of the best, or super weapons used by powerful countries against their enemies? Or, fitting harmless ( nearly) little creations made by bored programmers? I think the latter is to a greater extent correct. virtually computer viruses are harmless, except a very small percentage causes harm to a computer, each intentionally or due to errors in the code. But, it is certainly due to the media that everyone is scared of them. All most all unspoilt deal out and do something annoying, not format your hard drive. Take the Stoned virus for example, all it does is corrupt the boot sector of a disc then loads itself in memory.When the Stoned virus is in memory, it waits for the 13th of any month then displays on your screen Your computer is now stoned. plot of land in memory it corrupts any book that is in your computer and any entered after that. In this search I intend t o describe the different types of viruses, how they work, how they are compose, how to shell rid of them and how to find out if you energise one. There are many different types of computer viruses. They cover a wide area of infecting your computer. In fact, there are more viruses than legitimate programs, about 3 or 4 times more Boot sector viruses are a strange type of viruses.They dont infect files, but instead they infect the disk directly. When you double click on a disk the disk I run comparable an application (such as Word, Claris or Windoze itself). It is when the disk is run that is unremarkably tells the computer that it is a disk and to easy a window saying what is in it. But, if the disk is infected with a boot sector virus then the virus is run instead. Usually the virus will call the real part of the disk so that it appears to run normally. Also the virus is almost never the size of the boot sector so it has to install partly in the boot sector and the rest hidden somewhere on the disk.So your disk will be smaller than usual even if you shake no files installed. File viruses usually add a copy of themselves to the beginning or end of a program, usually to files that end in exe, com, cpl or dll. There is now a peeled type of viruses that infect vbs or js files either as tumesce or instead. The I_Love_You virus is an example of a virus that infects vbs files. Although the I_Love_You virus isnt correctly speaking a file virus, it is more of a sophisticate than a file virus, but as infects files as well Ill just use it for this example. Macro viruses only infect MS Word and MS Excel. MS Word and MS Excel.have their own programming language built into them, Visual Basic. VB (Visual Basic) enables programmers to write programs to modify tasks in Word Documents or Excel Spreadsheets. But it also enables virus writers to create viruses that can blossom forth through the most popular package documents by just reading the documents. And, MS Word and MS Excel has another stupid feature, it comes by the name of normal. dot. It enables the user to put macros in it so that they are run every time you open any document or create a new one. You can also put viruses there. Microsoft at their best as usual.Worms are not actually viruses. public computer viruses have to be run by the user somehow to dispel, but curves spread all by themselves, with no human intervention at all. They almost always spread through either networks or the net. You probably have heard of the second most famous worm ever, the I_Love_You letter worm that took the worlds media by storm in late 1999, early 2000. Or maybe youre old enough to recall the most famous and most destructive worm ever, the Morris Worm that brought down the entire Internet and most electronic communication.It worked by using a flaw in SendMail, a program that is used to place and received emails by almost every ISP in the world to spread. Basically it was an accident that it b rought down the Internet because it was spreading to quickly for the primitive computers to handle, and just crashed them. Worms generally use flaws in programs that are wide spread like Windoze and Outlook Express to spread. The I_Love_You letter virus used Outlook Express to spread, Morris Worm, SendMail.The Tune. G worm uses a flaw in Microsofts (Oh, no surprise there then ) Network Server to spread around the network. Generally all worms do is spread. In this next section, I intend to list the underlying methods of getting rid of viruses, not forever though, but for the meanwhile.1) Boycott Microsoft Almost all viruses are written for Windoze or DOS (What Microsoft brought out before Windoze, very primitive, but very good) 2) Get one or more decent anti-virus and up get word them regularly I personally use CA Inoculate IT get it at 1www. antivirus. cai. com, you can update it every day if you want for free, but I usually only update it every 2 weeks. 3) Be careful where you get your software from Only get it from time-honoured stores or websites. If you are suspicious, dont buy / download / run it4) Read, read and read Keep up to date on all security issues and virus information. Good sites include 2www. bugtraq. com, 3www. rootshell. com and 4www. microsoft. com (Hmmm, isnt that the source of all the problems? Well, they do have all the updates for Windoze and Microsoft products). Basically viruses arent as big a threat as the media makes them out to be. I personally have a collection of around twenty or more viruses, some harmful, some not. In the finally edit / copy of this essay there will be a floppy disk containing the source code for some of the most famous and not so (but just a dangerous) famous viruses.But, before you go mental at me for giving out viruses to anyone, I have edited them so that they dont do any damage unless you know good programming then you could change it back. But, I furnish that choice to you, and remember, if you us e the source (edited or not) and get caught, then dont blame me, I didnt tell you to do it. (PS. You can get the full unedited source code and a few of my own at my website. Ill tell you where it is in the next edit / copy). Graeme Ford,3K1.References 1. http//www. antivirus. cai. com/ 2. http//www. bugtraq. com/ 3. http//www. rootshell. com/ 4. http//www. microsoft. com/.