<p>Everything related to the computers is evolving and progressing from a technological point of view. The<strong> hardware </strong>is getting better and better and much more powerful from the performance point of view, only to meet the demands of the computer games and other software programs which are evolving as well. Since I said that everything evolves, I should tell you that the malicious software evolves as well. I will give you more information about the malicious software in what follows. There are different types of <strong>malicious software programs</strong>.

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One of them is the Trojan horse, which is named after the famous horse from the Greek mythology. As the name suggests, the Trojan horse malicious software will disguise itself in order to trick you, so that you will let him enter your computer and system from where he can do damage. The software is usually sent through e-mails and it has a hidden agenda. It will look just like a regular and useful program.

Another type of malicious software is the<strong> virus</strong>, which is one of the most famous. In fact many people believe that each malicious software is a virus but that is not true. The virus will enter the system; it will infect certain programs, replicate itself, and make those programs useless. You can prevent the virus by installing an antivirus program or by performing virus scans once in a while.



The <strong>worm</strong> is one of the most dangerous <strong>malicious software programs</strong> because it enters through the system without the user doing anything. Once the worm is in the computer, other persons have the possibility of controlling the computer. Such computers are called zombie computers. One of the most famous worms was the Morris worm which shut down the internet for days. That happened in 1988 when the protection was not that great, but if you think about it, if something like that would happen nowadays, it would cause damages of millions of dollars.

The <strong>logic bomb</strong> is malicious software which is set to start at a certain moment after it has been installed. The person might program it to start in a year or in whatever time he wants and to tell you the truth it can be very dangerous. A logic bomb has been used in order to manipulate the stock exchange and other times it was used to delete important files from various companies.



The keylogger is another malicious software programs which can be very damaging, but not for the computer, but for the one who uses it. The keylogger will record anything the user types, even usernames, and passwords, and that can be very damaging. These are the most popular malicious software programs, watch out not to get infected by any of them.

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<p>Even if the technology is on a constant progress, we still use the <strong>Compact Discs</strong>. It is said that these devices such as the CDs, DVDs, and so on will no longer be used in the near future because of the USB flash drives and other popular methods of storing computer data. I agree that the flash drives are better from that point of view, but the thing is that the CDs and DVDs are used and will still be used in the future because you can’t replace them in certain areas. Playing <strong>games</strong> can be achieved through the DVDs. Sure, you can copy the data onto the hard drive, and I am talking about the consoles here, but you will still need to buy the DVD in the first place.
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Many still listen to music from the CD, whether if they are in the car, or at home, and so on. I am sure that many of them would like to write their own CDs, but many of them believe that this can only be done with certain programs which are expensive and so on. Many avoid writing their own CDs or DVDs because they believe that the process is very difficult. This can not be farther from the truth because, there are various <strong>free CD burning software</strong> programs available and the process of writing them is not difficult at all.



If you will do a search you will see that there are more than a dozen<strong> free CD burning software</strong> programs available for download. Many of them are trials, meaning that you can only use them for a certain period of time, after which they can no longer be used. There are also many programs which can be downloaded for free and which can be used as long as you want. In some of the cases these programs will lack certain features that the full programs have, but even so, the main feature of burning the CDs will be present.



As I said, the process of writing the CDs and the DVDs is not difficult at all; in fact most of these programs have a very user-friendly interface which can be used by anyone. In most of the cases the programs will contain different features and settings but which are intended for the more expert users. It is most likely that the choices which you will have to make will be choosing the type of CD you want to write, such as Track or Data, and then the speed. It is advisable to select a lower speed because if the speed is too high, the device might not be able to proper read the CD or the <strong>DVD</strong>.

The software programs have evolved a lot in the last period of time, and together with them, so have the computer viruses. The computer viruses are not the weak programs which they once were, like it happened in the earlier days. The first virus was not dangerous at all and all it did was to merely display the message "I am the Creeper, catch me if you can!" The viruses from nowadays are far more dangerous, as they can destroy business, companies, and cause a lot of chaos. The viruses are no longer created by people who are bored, or by teenagers who want to be rebellious, in these days the viruses represent a business, and an industry.
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In order to protect your computer from them, you will have to install on your PC an antivirus programs which is a software program designed to keep these viruses away from your computer, or to remove them if they have been able to infect your computer. Luckily there are many choices to make as there are numerous antivirus programs. Some of them cost money but most of them are free anti-virus software programs.

Before you decide on which program to install, there are various things that you need to take in consideration. First of all the proper antivirus should be effective. It should be able to protect and to disinfect your computer from the malicious hardware; otherwise what is the point in installing it anyway? There are many software programs which are effective, some even claim up to 99% effectiveness, but that is debatable.

Affordability is another important thing that you need to take in consideration. As I said, there are many antivirus programs, and they all depend in price, some are more expensive, some are cheaper, and some are for free. You should know that the free ones, some of them at least, are just as good as the expensive ones. I guess you are asking yourself right now: “then what is the point in buying one?” The answer is the customer support, an aspect which the free anti-virus software programs lack. The free antivirus programs are also unable to update as fast as the expensive ones mainly because these are not created by a whole team of people but by only a bunch of people.

The usability should also matter because the program should be very easy to use and it should not cause any inconveniences when you use it. The program should be suited for all type of users, whether they are experts or beginners, and so on. If you can’t use it, then what is the point of buying it, right? These are the things that you need to take in consideration when it comes to the antivirus programs.