Jul 31st 2010 More About The Computer Viruses. Part I.
In this article we shall talk more about the computer viruses.
In computer facilities the concept of safety is rather wide. It means also reliability of work of the computer, and safety of the valuable data, and protection of the information against entering into it of changes by unauthorized persons, and preservation of secret of correspondence in a electronic connection. Certainly, in all civilized countries on the guard of safety of citizens there are laws, but in sphere computers the law practice is developed not enough so far, and legislative process is not in time behind development of technologies, therefore reliability of work of computer systems in many respects leans against self-defense measures.
The computer virus is the program code which has been built in into other program, or the document, or in certain areas of the carrier of the data and intended for performance of unapproved actions on the bearing computer.
The basic types of computer viruses are:
Program viruses;
Loading viruses;
Macro viruses.
Computer viruses are adjoined also by the so-called Grecian horses (Trojan programs, Trojans).
Program viruses. Program viruses are the blocks of a program code purposefully introduced in other applied programs. At start of the program bearing a virus, there is a start of the virus code implanted into it. Work of this code causes the changes hidden from the user in file system of hard disks and-or in the maintenance of other programs. So, for example, the virus code can reproduce itself in a body of other programs – this process is called as reproduction. After incident of certain time, having created enough of copies, the program virus can pass to destructive actions – to infringement of work of programs and an operating system, removal of the information stored on a hard disk. This process is called as virus attack.
The most destructive viruses can initiate formatting of hard disks. As disk formatting – is a long enough process which should not take place not noticed from the user’s side, in many cases program viruses are limited to destruction of the data only in system sectors of a hard disk that is equivalent to loss of tables of file structure. In this case the data on a hard disk remains untouched, but it is impossible to take advantage of them without application of special means, as it is not known, what sectors of a disk to what files belongs. Theoretically to restore the data in this case is possible, but labor input of these works is exclusively high.
It is considered that no virus can put out of action hardware maintenance of the computer. However there are cases when hardware and the software are so interconnected that program damages should be eliminated by the replacement of hardware.
Your PC can get into serious problems if you do not pay attention to the regular update of the drivers. And this is where driver updater can save you much time.
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