123ArticleOnline Logo
Welcome to 123ArticleOnline.com!

ALL >> Business >> View Article

5 Top Computer Viruses

By Author: Vivek Shaker
Total Articles: 4777

A virus is a computer program, as small as just a few lines of code, which loads itself into a host computer without the user's knowledge or permission. It then performs certain functions, either benign or damaging, and reproduces itself to spread onto other computers, via an e-mail program, removable media or another "vector." Viruses are distinct from spyware, most worms and the majority of Trojan horses, although they can fall under the general heading of "malware," despite the latter term being of much more recent vintage.

One thing to remember about any list of "top viruses" is that new ones are coming out all the time. Also, there are certain viruses that have multiple variants, close enough to the original to be named something similar (or even identical), further confusing matters for less technologically sophisticated computer users. If that includes you, just make sure you are reading a recent list or article from a trusted source of tech info (major media magazines, manufacturer sites, Symantec, government agencies, etc.).

Based on rankings from a variety of watchdog groups and technology reporters, the following are the Top 5 Computer Viruses for Windows PCs through the fall of 2009:

1. Win32/Conficker
This network virus acts like a worm to exploit a weakness in what is called the "RPC sub-system," part of the Microsoft Windows OS (operating system). It allows a hacker/attacker to compromise, invade or use a computer without valid user credentials, all from a remote location. Win32/Conficker enters a computer through an unsecured folder, some kind of removable media or by manipulating the Autorun feature that, by default, is turned on in Windows. This virus connects with other domains to download even more damaging code. To combat the threat, users should update their systems with a patch that has been freely available since October 2008.

2. INF/Autorun
The most common threats to PCs come from the creation of an "autorun.inf" document. These files have information in them about the programs that are supposed to run automatically when removable drives or other devices are connected to a computer. Computer users need to turn off the Autorun feature that Windows turns on by default. With the rise in popularity of thumb drives and other removable devices, this threat has bounded up the list from an also-ran to #2.

3. Win32/PSW.OnLineGames
There is a family of virus-like Trojans that were created to wreak havoc on game players by stealing user credentials and making off with other personal or financial data. The purloined information is sent to the instigator's PC, where he or she can cause some serious damage with it. Gamers should remain on high alert as this threat is still being discovered in large numbers across the globe.

4. Wind32/Agent
Yet another serious threat to computer users is the Wind32/Agent. It reproduces itself in temporary locations, steals data from the compromised PC and adds spurious entries to the all-important Windows registry. By creating a number of files at various spots in the PC's system folder, it is able to run on every single startup. This is how it assembles a complete log of information from the infected PC before transferring it to the instigator's computer over the Internet. A good defense is a strong anti-malware program, but users should also disable the Autorun facility and resist opening any unknown files.

5. Win32/FlyStudio
This modifies settings of the PC victim's Internet browser to affect answers to search queries and thereby direct the user to specific advertisements. This particular threat has primarily targeted computer users in China, although it has been reported North America, too. In an interesting turn of events this malicious code is distributed by a completely different malware family.

Although these viruses are all targeting Windows PCs, the Macintosh family is not entirely immune. It is still true that there are fewer malware and virus attacks on Macs, and it is not simply because there are fewer of them. Fact is, there are millions of Macs in the world, but the Mac community is more cohesive and the underlying OS is more robust for resisting incursions.

In mid-2006, Sophos Anti Virus identified the first "real virus" for Macintosh OS X, which was named "OSX/Leap-A" or "OSX/Oomph-A." In the form of a worm or a Trojan horse the threat is spread by instant messenger (IM) software, and sends itself as a file named "latestpics.tgz" to contacts on the infected user's "buddy" list. It does no damage to the OS besides invading it to replicate itself to other users.
About Author:
Visit Data Source.net for Los Angeles IT consulting where we specializing in the design and implementation of high end digital networks and also provide computer repair/recycling in Orange County LA. Visit online today.

Total Views: 115Word Count: 775See All articles From Author

Business Articles

1. Three Advantages Of Enterprise Content Management Software That Proves Helpful For The News Agencies
Author: Unknown Member

2. Get Ready For The Trips With Wholesale Straight Tuck Boxes
Author: Kashif Aftab

3. Connect With The Right Prospective Tenants With Easy Tenant Screening Tool
Author: Lee Wood

4. Excel Tricks And Shortcuts For Accountants Are Finally Here!!
Author: Lunna Walker

5. Some Useful And Realistic Ways To Get Money Online Without The Hazards Of Additional Investment
Author: Osemudiamen Okoh

6. How Mcr World Is Helpful In Accomplishing Your Goals In The Stock Market
Author: mcrworld knowledge corner

7. Dlf Mall Of India-greatest Enjoyable Place To Visit In Noida
Author: DLF Mall of India

8. Our Every Product Comes With Our 100% Satisfaction Guarantee
Author: For more details:- hiking store, hiking accessori

9. Marquee Tent Hire Is The Best Option For Those Who Wish To Add A Different Taste For Their Parties
Author: John Jackson

10. Folding Sitting Stool With Carrying Handle
Author: For more details on our products and services, p

11. Manufacturer And Supplier Of Best Quality Polypropylene Multifilament Yarn In Aurangabad
Author: Shreeram Industries

12. Manoeuvring Forklifts For Safety
Author: Alvira Khan

13. Advocaat Bedrijf
Author: interius

14. Armchairs And Sofas For Children
Author: kotee.shop

15. Nick Lynch, Cpt
Author: For more details on our products and services, p

Login To Account
Login Email:
Forgot Password?
New User?
Sign Up Newsletter
Email Address: