Who/what creates computer viruses and why?
145961
Mostly, people who are too smart for their own good.  They get bored and come up with viruses to entertain themselves.  Some create viruses to test companies' security systems.  A few, do it for financial gain (phishing)
474212
There has been a new virus just discovered called 'A (Virtual) Card for You.' It has been classed by Microsoft as the most destructive ever. It destroys Sector 0 of the HDD where functioning info is stored. It is sent by email to all contacts on the list and once opened, infects the pc. Hope you find this useful
459605
Its Avast.... free first of all..\nthen it has all the best Security available with the really reputed ones...I am using it personally...\nIts just amazing...not a single Virus residing on my PC since last 4 years...Hope that Impresses u enough..
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.
101813
The World's Worst Viruses\n\n\nHere's a look at ten of the most malignant viruses and worms of all time.\n10. Surreptitious Sircam\n\nSircam appeared in July 2001 on PCs running Windows 95, 98, and Me. The worm appeared in e-mail in-boxes with an attachment; the body of the message was in Spanish or English. Typical greetings included "Hi! How are you?" and "Hola como estas?" If you launched the attachment, Sircam installed itself on the infected computer, then grabbed random documents and sent them out to e-mail addresses it captured from your address book. It also occasionally deleted files and filled the infected computer's hard drive with gibberish. Visit Symantec's Security Response for instructions on how to remove Sircam.\n9. Red Raider\n\nCode Red burned brightly in the summer of 2001, infecting hundreds of thousands of computers--mainly on corporate networks. Code Red slithered through a hole in Internet Information Server (IIS) software, which is widely used to power Internet servers, then scanned the Internet for vulnerable systems to infect and continue the process. The worm used contaminated PCs as weapons in denial of service attacks--flooding a Web site with a barrage of information requests. The original target was the official White House Web site, but government officials changed the site's IP address to thwart the attack.\n\nThe worm exploited a weakness in the IIS software (which has since been fixed with a patch from Microsoft) that allowed an intruder to run arbitrary code on a victimized computer. Multiple variants of this worm now exist. Visit Symantec's Security Response for instructions on how to protect your system from Code Red.\n8. Bad Benjamin\n\nBenjamin--a new breed of worm--was let loose in May 2002, and it affected users of the popular file-sharing program Kazaa. The crafty worm posed as popular music and movie files. Kazaa users thought they were downloading a media file to their machines, but they got the imposter instead. It then set up a Kazaa share folder and stuffed it with copies of itself posing as popular music and movie files, which other Kazaa users would download. It congested the system's network connection and would ultimately fill up a hard drive. Visit Symantec's Security Response for instructions on how to remove Benjamin.\n7. Numbing Nimda\n\nNimda (also known as the Concept Virus) appeared in September 2001, attacking tens of thousands of servers and hundreds of thousands of PCs. The worm modified Web documents and executable files, then created numerous copies of itself. The worm spread as an embedded attachment in an HTML e-mail message that would execute as soon as the recipient opened the message (unlike the typical attached virus that requires manual launching of the attachment). It also moved via server-to-server Web traffic, infected shared hard drives on networks, and downloaded itself to users browsing Web pages hosted on infected servers. Nimda soon inspired a crowd of imitators that followed the same pattern. Visit Symantec's Security Response for the Nimda removal tool.\n6. Tennis Anyone?\n\nThe Anna Kournikova (or VBS.SST@mm) worm, appearing in February 2001, didn't cause data loss, although in the process of boosting the profile of its namesake, the Russian tennis player, it did cause embarrassment and disruption for many personal and business users. The worm showed up in Microsoft Outlook users' e-mail in-boxes with an attachment (supposedly a picture of Kournikova). The attachment proved hard to resist. The result? Clicking the bogus attachment sent copies of the worm via e-mail to all addresses found in the victim's Outlook address book. Kournikova also brought about a number of copycat variants. Visit Symantec's Security Response for instructions on how to remove Kournikova.\n\nMost worm creators have never been identified, but a 21-year-old Dutchman, Jan de Wit, admitted to unleashing
185557
Sounds like a conspiracy, but in my experience the people who creates virus are usually people who want to challenge the big wigs like MS and Symantec. Unfortunately, after the big wigs dissects the virus, the code is open and they could do whatever they want with the codes including but not limited to Recreating a stronger version of the virus to be unleashed on the net again so they can make profit.
901267
All viruses are as bad. Perhaps the one damages hardware (not the crawling ants or flying moths, I mean the real computer virus) the BOOT SECTOR/PARTITION TABLE viruses\n\nThe most notorious network viruses are CodeRed, Nimda, SQLSlammer, and MSBlast.\n\nCodeRed spreads as a series of packets in system memory via network port 80 (http) by exploiting a vulnerability hole (MS01-033) in Microsoft IIS (Internet Information Service). \n\nNimda spreads via network port 80 (http) by exploiting a vulnerability hole (MS00-078) in Microsoft IIS (Internet Information Service). Nimda is considered a blended threat, since it also has the ability to spread itself across the network via shared drives and email attachments. \n\nSQLSlammer spreads as a series of packets in system memory via UDP network port 1434 (SQL) by exploiting a vulnerability hole in Microsoft SQL Server 2000 and Microsoft Desktop Engine 2000 (MSDE). \n\nMSBlast spreads via network port 135 (DCOM RPC) by exploiting a vulnerability in the Windows Distributed Component Object Model (DCOM) Remote Procedure Call (RPC) interface. It also uses several other network ports (UDP 69, TCP 4444) during its propagation.\n\n\nThere is a link with very good info on this subject\n\nhttp://www.robson.org/gary/writing/jcr-viruses.html\n\nIt talks about the notorious stealth viruses and polymorphic viruses\n\nE-mail is the worst source, am I right?
654902
Trojans are maliscious codes created by people that do this to cause trouble for others because they are inconsiderate and jerks. They don't make money and they usually do it to say they were the one that created the trojan,for bragging rights. Notice that you can get into serious trouble and even cause the death of people by corrupting computers,especially ones used by hospitals and law enforcement!!!!
149655
Back in the day it was always rumored that McAfee did this and it's persisted as an unban legend since then. 90% of all bugs you see today are not true viruses but rather worms based on known exploits and in my opinion if the Antivirus companies were actually writting viruses then the virus code would be much better.
98767
virus work:\nmost likely virus in the real world\n\nanti virus work:\nscanning files/memories comparing every bit with "signature" that already known in the virus database.\nthen do whatever it should take (delete/cure/quarantine)
22961
I would start the answer by the famous quote, "Why do computers get viruses. They're little boxes. They shouldn't." ~ Janelle\n\na 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. Viruses are one of the several types of malicious software or malware.\n\nn order to replicate itself, a virus must be permitted to execute code and write to memory. For this reason, many viruses attach themselves to executable files that may be part of legitimate programs. If a user tries to start an infected program, the virus' code may be executed first. Viruses can be divided into two types, on the basis of their behavior when they get executed. Nonresident viruses immediately search for other hosts that can be infected, infect these targets, and finally transfer control to the application program they infected. Resident viruses do not search for hosts when they are started. Instead, a resident virus loads itself into memory on execution and transfers control to the host program. The virus stays active in the background and infects new hosts when those files are accessed by other programs or the operating system itself.\n\nCheck out this movie on Virus replication :\nhttp://video.google.com/videoplay?docid=9192961636386984286&q=computer+virus\nhttp://video.google.com/videoplay?docid=-7821323279275205551&q=virus\n\nALso check out the movie ANTIVIRUS:\nhttp://video.google.com/videoplay?docid=3481400607478146088\n\nThe best Antivirus to prevent Virus Infection is Norton Antivirus, but it is heavy on system and is generally in 60 day trial version forms. I personally like Avast, because it is light weight and is free.\n\nI have a few Free Antivirus programs I can reccomend:\n\nhttp://www.avast.com/ avast!\nhttp://www.free-av.com/ AntiVir HBEDV\nhttp://free.grisoft.com/doc/ AVG Free Edition\n\nAlso, if your willing to experiment:\nhttp://www.microsoft.com/windows/onecare... Windows OneCare Beta\n\n\nThe best resource for antivirus:\nhttp://www.faqs.org/faqs/computer-virus/alt-faq/part1/\nhttp://www.faqs.org/faqs/computer-virus/alt-faq/part2/\nhttp://www.faqs.org/faqs/computer-virus/alt-faq/part3/\nhttp://www.faqs.org/faqs/computer-virus/alt-faq/part4/
1046046
Some useres create virus because the users are depressed or something lke that, just like to make bad things. So they use email to spread virus. Also, the spam is maked to make money or to make you mad. Just bad things.
57521
Viruses are the programs that run unwantedly on the background with harmful effects. The Virus may delete your files, or fill all your Hard Disk without leaving any space or shut down your PC unwantedly, or send unwanted mails without your knowledge or something else. The virus programmers will be taking advatage of the weaknesses of the OS.\nMostly the computers will be infected by the viruses from Internet or Floppy/CD.\nNever Connect to the internet without a good Antivirus installed.
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.
10262
Have you scanned for viruses?
208316
According to my friend who works at Symmatec, Many viruses and spyware are reported by users.  The anti-virus/spyware software companies then investigate on a solution.
60804
Friend, Viruses and spyware spreads through websites, email and other sharing methods. email is the common source for viruses. They speak like your friend and tel you to install the software. The bill gates mail is a ig fraud. You can report that to FBI because they track these things.\n\nTo know more about how to stop click the below link http://xtra.co.nz/help/0,,11739,00.html\n\nAll the best