Who created virus and it is for what??
339839
mostly companies of anti-virus software \nto sell their software better
22422
Different virus programs detect different viruses.  The people who write virus definitions (the clues that your program uses to look for viruses) can only create definitions for viruses they know about.  It's entirely possible that the different companies know about different viruses.  Therefore, why not use all of them?
494683
Usually virus's are programs to attack different fields of the computer.  If it is a trojan horse then it will be sleeping on your computer waiting for you to hit the Requirement(could be a folder, or type a leter of number, etc.) that was set to release the virus into your computer to do the damage.
111098
Some people know how to program and get a thrill thinking about all the havoc they can cause with a virus. Or they like the noterity it brings in the evil-hacker community.\n\nBasically, a more technical version of vandalizing stuff.
1012068
run a check on Microsoft site.enter the names in the virus search.you should get your answer there.
305229
The makers of malware do not always have their purposes clear. There are some (who usually make worms, keyloggers, and trojans) that have intent to steal useful data, others (viruses and the like) which seem to only have intent to destroy data. It's usually very difficult to detect the creators of these things because of the propogation. If the creator of a worm walks up to an internet cafe, emails someone the worm, and just waits, eventually the worm will propogate by itself and you have an extremely difficult to trace situation.
393558
Viruses are in a nether world. They are neither dead nor alive, and they certainly don't belong to a phylum or a class.
540262
IMPORTANT - NEW VIRUS ALERT!!!\n\n\n\n\nThere is a dangerous virus being passed\nelectronically, orally and by hand. This virus is called\nWorm-Overload-Recreational-Killer (WORK). If\nyou receive WORK from any of your colleagues, your\nboss or anyone else via any means DO NOT TOUCH IT.\n\n\nThis virus will wipe out your private life completely.\nIf you should come into contact with WORK put your\njacket on and take two good friends to the nearest pub.\n\n\nPurchase the antidote known as Work-Isolator-Neutralizer-Extractor (WINE).\n\n\nTake the antidote repeatedly until WORK has been completely eliminated\nfrom your system. You should forward this warning to 5 friends. If you do\nnot have 5 friends, you have already been infected and WORK is\ncontrolling your life.\n\n\n\n\nUpdate: After extensive testing it has been concluded that\nBest-Equivalent-Extractor-Remedy (BEER) may be\nsubstituted for WINE but may require a more generous application.\n\n\n\n\nOne day, a man came home and was greeted by his wife dressed in a very sexy\nnightie. "Tie me up," she purred, "and you can do anything you want."\n\nSo he tied her up and went golfing.\n\n    ***********************************************\n\nA woman came home, screeching her car into the driveway, and ran into the\nhouse. She slammed the door and shouted at the top of her lungs, Honey, pack\nyour bags. I won the damn lottery!"\n\nThe husband said, "Oh my God! What should I pack, beach stuff or mountain\nstuff?   "Doesn't matter," she said. "Just get the hell out of here."\n\n    ***********************************************\n\nMarriage is a relationship in which one person is always right, and the\nother is a husband.
26355
In computers, a virus is a program or programming code that replicates by being copied or initiating its copying to another program, computer boot sector or document. Viruses can be transmitted as attachments to an e-mail note or in a downloaded file, or be present on a diskette or CD. The immediate source of the e-mail note, downloaded file, or diskette you've received is usually unaware that it contains a virus. Some viruses wreak their effect as soon as their code is executed; other viruses lie dormant until circumstances cause their code to be executed by the computer. Some viruses are benign or playful in intent and effect ("Happy Birthday, Ludwig!") and some can be quite harmful, erasing data or causing your hard disk to require reformatting. A virus that replicates itself by resending itself as an e-mail attachment or as part of a network message is known as a worm.\n\nGenerally, there are three main classes of viruses: \nFile infectors\nSystem or boot-record infectors\nMacro viruses
1141589
My friend I hope this answers are able to help you \n\nA destructive program that masquerades as a benign application. Unlike viruses, Trojan horses do not replicate themselves but they can be just as destructive. One of the most insidious types of Trojan horse is a program that claims to rid your computer of viruses but instead introduces viruses onto your computer. \nThe term comes from the a Greek story of the Trojan War, in which the Greeks give a giant wooden horse to their foes, the Trojans, ostensibly as a peace offering. But after the Trojans drag the horse inside their city walls, Greek soldiers sneak out of the horse's hollow belly and open the city gates, allowing their compatriots to pour in and capture Troy. \n-----------------------------------------------------------------------\nWhat is a trojan? A trojan is a program that appears to be safe, but can hide malicious computer code that can spread a virus or worm. Access to another person's computer is often gained through the use of a trojan... What is a Trojan? A trojan is a program installed on computers usually without the owners permission or knowledge \n-----------------------------------------------------------------------\nwhat is Spam \n-----------------------------------------------------------------------\nWhat is spam?\nSpam is unsolicited e-mail which is sent in massive quantities to unsuspecting Internet email users.\n\nMost spam tries to sell products and services such as mortage refinancing, memberships to pornograpic web sites, and drugs such as Viagra.\n\nA more dangerous category of spam tries to convince the recipient to share their bank account numbers, credit card numbers, or logins and passwords to their online banking systems or services such as eBay and PayPal.\n\nSpam is sometimes referred to as Unsolicited Commercial E-Mail (UCE). Not all spam is commercial. Some spam is simply criminal, while other spammers send unrequested e-mails attempting to share their political or religious views.\n\nStopping Spam\nSpam is almost impossible to stop completely, but it can be reduced to a less aggravating level through spam filters and legislation.\n\nSpam Filters\nA spam filter is a software application which is installed either on a mail server or a mail client.\n\nE-mail administrators typically install spam filtering software on mail servers. By far the best spam filtering software for mail servers is Spam Assassin. Spam Assassin is a free product of the Apache Project.\n\nMicrosoft Outlook is currently the most popular e-mail client software in use. As of Outlook 2003, Outlook now ships with a reasonably good spam filter. Many companies sell software designed to improve the Microsoft Outlook spam filter.\n\nAnti-Spam Legislation\nMany states and countries have enacted legislation designed to enable the prosecution of spammers. This is a very difficult task because spammers may operate across national boundaries and operate anonymously.\n\nSpam Laws is a comprehensive archive of anti-spam legislation which has been enacted worldwide.
656212
Virus is malicious programming....Like starting something without providing an end to it...\nHacking is the way through which you can break the security on internet
1109237
A dangerous computer program with the characteristic feature of being able to generate copies of itself, and thereby spreading. Additionally most computer viruses have a destructive payload that is activated under certain conditions.\n\nA computer virus is a self-replicating program containing code that explicitly copies itself and can "infect" other programs by modifying them or their environment such that a call to an infected program implies a call to a (possibly evolved) copy of the virus
961792
All 3 are malware of one form or another.  They vary in how they infect a system, and whether or not they can replicate themselves to other systems.\n\nViruses are "parasites" - they attach to files (executables, Word macros, etc).  They self-replicate, but require some sort of user interaction to infect a system (opening a document, running a program, etc.)  Typically, viruses alter the program they're attached to in order to run their commands.\n\nWorms are standalone - they attack system vulnerabilities (such as network services).  These self-replicate, and require no user interaction - which leads to them spreading quickly.\n\nTrojans are, like the original trojan horse, not what they seem.  They're the bait-and-switch model - programs that claim to do one thing while doing something else.  These do not replicate, and require user intervention to infect a system.
1058516
Let's explain this in human terms- \n\nA virus to a computer is like a viral infection to a human.  It is like the air bound bacteria that travels through the air that cause us to get ill if contacted- such like a common cold.  Unlike us, a computer doesn't have a natural immune system to protect it from bad elements, and that why an Up-To -Date Anti-Virus Program with  auto-updating virus definitions is very essential.  Computer viruses and all other pest and scary crawlers are all over the virtual web.  \nA computer can easily catches a virus by us clicking on a link, more opening a document that already has a virus in it, etc....  Consequently, the level of damages a virus can do to a PC depends on its incubation period(how long b4 noticed) and its characteristics(the purpose in nature. ex- keylogger, hacker, etc...).  A general virus symtoms are 1.  Your PC runs extremely slow all of a sudden. 2. changes in display resolutions.  3. frozen. and 4. "if it sneezed."  HA!  HA!\nI have a theory that computer viruses is evolving although there hasn't been proofed facts about computer virus mutations.  By observing the similarities of different viruses' habitats and the linkages btw their family trees(1), I came with the theory that many new viruses are actually evolved from the previous ones within that family.  Relevantly, other more serious bugs like worms, swans, and etc are actually albinos mutated from the many virus families; which is one of the reasons why these are harder to get rid.
264300
One of the few solid theoretical results in the study of computer viruses is Cohen's 1987 demonstration that there is no algorithm that can perfectly detect all possible viruses.\n\nHe has also many other works related to computer viruses.
163063
Therm,\n\nIn computer security technology, a virus is a self-replicating program that spreads by inserting copies of itself into other executable code or documents. A computer virus behaves in a way similar to a biological virus, which spreads by inserting itself into living cells. Extending the analogy, the insertion of a virus into the program is termed as an infection, and the infected file (or executable code that is not part of a file) is called a host. \n\nIn the context of computer software, a Trojan horse is a malicious program that is disguised as legitimate software. The term is derived from the classical myth of the Trojan horse. In the siege of Troy, the Greeks left a large wooden horse outside the city. The Trojans were convinced that it was a gift, and moved the horse to a place within the city walls. It turned out that the horse was hollow, containing Greek soldiers who opened the city gates of Troy at night, making it possible for the Greek army to pillage the city. Trojan horse programs work in a similar way: they may look useful or interesting (or at the very least harmless) to an unsuspecting user, but are actually harmful when executed.\n\nA computer worm is a self-replicating computer program, similar to a computer virus. A virus attaches itself to, and becomes part of, another executable program; however, a worm is self-contained and does not need to be part of another program to propagate itself. \n\nhttp://en.wikipedia.org/wiki/Computer_virus
128858
Someone almost downloaded a virus on my comp and i figured out who it was by looking at the time it was accessed (look at the history) but if you don't know who was on when look and see what else they did at that time like check their yahoo mail or other websites. Thats what i did.