Showing posts with label computer virus. Show all posts
Showing posts with label computer virus. Show all posts

Tuesday, March 1, 2011

Dangers On Your Desktop: Computer Virus And Spyware

Dangers On Your Desktop: Computer Virus And Spyware
Word Count:
665
Summary:
So have you bought a new computer at home for yourself and for your kids? Your computer is sure going to be useful to you and your family. You can now use your computer to store important data, work on reports and much much more. Your children can now surf the internet, play games and learn new tools and software programs. By purchasing a computer you open the world to the big bad world of the internet. Why is the internet a big bad world? The internet can prove to be a big b...

Keywords:
spyware removal,data recovery,computer virus

Article Body:
So have you bought a new computer at home for yourself and for your kids? Your computer is sure going to be useful to you and your family. You can now use your computer to store important data, work on reports and much much more. Your children can now surf the internet, play games and learn new tools and software programs. By purchasing a computer you open the world to the big bad world of the internet. Why is the internet a big bad world? The internet can prove to be a big bad world for you if you don’t take care to protect your computer from internet threats. In fact the internet is the most comprehensive source of information available at the click of the button today. You can search for diverse topics. You can use the internet to access your bank accounts, to join newsgroups, to entertain yourselves, listen to music and even watch movies. You can even use the internet to speak to people at low costs through VOIP (Voice over Transmission Protocol) all over the world. There are very few boundaries associated with the internet.
But, you should be wary of all the threats that the internet can invite to your computer. First of all let’s talk a little about computer viruses. A computer virus is a software program written by a person which can prove to be a threat to the security of your computer. It gains access to your computer through programs downloaded from the internet and even from seemingly harmless emails. It can delete all your important files after it loads itself on the system or it can just make your hard disk unusable. It can disable your important device drivers and can do hundreds of other damaging things to your computer. The software program (or computer virus) spreads rapidly through the internet and can invade thousands of computers a minute.
The best solution against virus invasion is the installation of good antivirus software. Norton Antivirus by Symantec proves to be one of the better paid antivirus solutions. It provides tight security in comparison to some of the other antivirus softwares and also updates itself regularly. The other important software you can use to protect your computer is installing a firewall. A firewall restricts unauthorized access to your computer by people on the internet who are constantly on the lookout for open ports on computers. In addition, if you use the internet to make purchases with your credit card, make sure you are using a trusted and secure site. Secured sites conduct financial transactions using secure software like Verisign so that your private information cannot be viewed by unauthorized people.
When using services or programs that use passwords, always use passwords that are difficult to guess by others. Do not ever open unauthorized emails as they might be harmful to your computer. Unauthorized or unsolicited mails are the most common path to spreads a virus through the internet.
When you visit some sites, a spyware program maybe installed on your computer automatically by those sites. A spyware program is a program that collects all information on your computer including private information that can then be made known to unauthorized people. Using an anti-spyware program like Spyware Blocker or Ad-Aware comes in handy. These programs work to prevent spyware from automatically installing on your computer in the first place. You must also delete your cookies regularly. A cookie is a small file that is automatically installed on your computer and it accesses the information on your computer including the web sites that you have visited and sends all information back to people who need access to that information.
If you use a little care, you can provide some protection to you and your computer. However, the only way to completely eliminate any threats is not to go online in the first place. I don’t think that is a viable option in today’s world. Good luck!

Monday, February 21, 2011

Computer Viruses an Over View.

Computer Viruses an Over View.
Word Count:
946
Summary:
Computer security is a vitally important issue in today's society, a lot of the most critical aspects of our lives require computers, and keeping those computers secure is critical. The popularity of the Internet and the amount of time we spend making use of it has made it very simple to spread computer viruses.

Keywords:
computer virus

Article Body:
Computer security is a vitally important issue in today's society, a lot of the most critical aspects of our lives require computers, and keeping those computers secure is critical. The popularity of the Internet and the amount of time we spend making use of it has made it very simple to spread computer viruses.
Computer viruses have become such a problem that they are now frequently mentioned in both the newspapers television news bulletins as well as in the online media. It is absolutely critical that you take steps to protect yourself against viruses, and you must be really vigilant if you spend a lot of time online.
Virus can be transmitted through e-mail, or a file you download even if you do not install it, but they can also be present in the files on a floppy disk especially if it is being passed from friend to friend. Lots of computers get infected every day, and if you do not take precautions yours may be next, you may lose all of your data on your machine. Once gone, it will be irretrievable unless of course you had the good sense to take a regular back up!
A computer virus is a small program that has the ability to duplicate itself, just like a real virus hence the name, also just like a biological virus it must have a host to exist. The virus payload, the end product of the computer virus, can be something harmless it can be as simple as displaying a message, or something very serious it could fully reformat your hard drive. Recent computer virus attacks have resulted in major disruption to both home computers and the networks of governments and multi national companies.
The advance of the Internet has been the most essential issue in the increase of computer viruses. Originally viruses were spread when people swapped disks with their friends, by its very nature this tended to restrict the spread of the computer virus but today most people do not tend to use external media like disks to store data in the same way, This has resulted, most viruses being spread via the use of e-mail and file sharing on the Internet. All that is required is for you to open an e-mail attachment or download a dangerous program and this can give your computer a virus. There are by now, about fifty thousand viruses in existence, but there are several hundred new threats produced each month.
There are a number of motives that encourage people to write computer viruses. The earliest virus programs were by and large written as pranks or experiments. However as some programmers began to learn their way about systems and the Internet, they wrote viruses just to see what they can do with them. For example, a programmer might write a computer virus code just to see how far it would spread. Unfortunately it did not stop there, other more malicious individuals, have far more hostile intentions and they took great delight writing computer viruses to harm websites or damage people's computers.
An additional reason a computer virus gets produced is to blackmail large corporations with the threat of setting off a loss of data on their systems. There have been lots of viruses written for revenge. Employees who are about to lose their jobs can sometimes leave viruses behind on the company system to do damage to their former employer's ability to do business.
Also lots of viruses are written for profit. The computer viruses may be used to send e-mail spam (so the original sender is disguised), causing your computer to serve as a host to illegal data, or engage in other illegal activities. Also, viruses can be used to spy on users, display pop-ups while the user is not on the internet, and acquire user data like bank accounts or credit card numbers.
Viruses tend to fall into two major types, Worms or Trojan horses, but just to complicate things Trojan horses, can be a type of worm.
A Computer Worm is a self replicating program, the first worm to gain wide attention was the Morris Worm this infected a large number of computers and earned its writer 400 hours of community service and over $10000 in fines!
Trojan horses as the name implies are hidden viruses. This helps the program to get installed in the first place. They then quietly run in the background, while disseminating its malicious code. This code can do any amount of things. It can begin right away or it may simply install a program that won't start for sometime. Once it does start, it can delete all of the files on the computer or it can infect the computer and try to infect other computers on the network.
There are a number of ways viruses are delivered, and as a Trojan horse is the most common. It generally comes with other pieces of software that a user might find interesting. This software is usually shared through a file-sharing network or downloadable off of the Internet. Once the user installs the software, the virus also gets installed.
It is vital that you cover yourself against viruses, this can done very simply by installing a good anti-virus program and keeping it up to date. There are both free and expensive software applications around that can be set to self-update to protect from viruses.
You can also help defend yourself by being cautious where you download files from; only use a reputable well-known source. You should also not to open any e-mail attachments unless you know the sender. Making these safety precautions will help to protect you from computer.
Roger Overanout