Computer Virus and Biological Viruses
"VIRUS: Vital Information Resources Under Siege (resources vital information under harassment)"
The great similarity between the operation of computer viruses and biological viruses, which led to these small programs are called viruses. But this word still find it somewhat generic and even improper to several scholars of the life sciences, where this applies to the world of computers as it did not consider entirely accurate. Computer viruses exist as a concept many years ago, a virus is a program with the ability to replicate, namely to produce copies of itself in this regard their behavior is identical to that of biological virus. Viruses used biological healthy cells to produce replicas of themselves and infect other cells, using computer viruses infected the implementation of programs to infect the cleaner. The biological viruses reproduce exponentially, the computer as well.
Computer viruses are small programs that, when implemented, have a behavior very similar to that of biological virus. It is regarded as virus programs designed and written in order to unduly disrupt the operation of a computer without the user to inform and prevent it. This means that computer viruses do not occur by spontaneous generation: behind every new virus that makes act of presence in the world is a figure anonymous or unidentified idea what that program and for unclear.
In the main function Computer virus is around the dissemination and propagation of the program itself that lies within it. When the virus is active, contends its code at random files on the system puts at your fingertips. By adding or replicating the virus code on a file or program, this is infected. Therefore, all files become contaminated elements transmitters of the virus, to be copied or sent to another team, can contagion.
Computer viruses do not occur accidentally, but codes or programs that are well designed by skilled programmers to damage data or restrict access to certain areas of information. Although not hurt a living organism, these viruses have a performance like biological viruses, because they can reproduce, damaging software on your computer and stay there a long time before being detected. Like biological viruses, computer viruses are sensitive to vaccines (virus), which are programs designed to eliminate them. The term "computer virus" is derived by analogy of biological virus. The word "virus" means "poison" in Latin.
In Biology are called to certain viruses in nature tiny infectious agents, who are unable to have independent living or self-reproduction. They require a host or more complex organism to live, which will provide the energy needed to reproduce. When this type of parasites reproduce tend to generate metabolic abnormalities host and practically leave no external traces indicating their presence at the beginning of their pregnancy.
Computer Viruses are programs that hide in the storage devices and if these are found in other programs or data pollute. No virus can operate solito requires to be able to affect other programs. His other feature is the ability to reply, making identical copies of themselves, logging and poaching is so common that create anomalies in the counting teams to develop their role often destructive. The viruses attack only the software of computers, damaging information, but in no way physically damage or destroy parts of the team.
Since that requires a host (even if a computer virus), the election of the virus can be a file, memory, boot sector, partition tables, etc.. Like all programs, you need loaded into memory for subsequent execution needs and then stored in an archive. A virus can be part of an existing file or a file itself (such as Trojan horses, worms and backdoors), and hide in some areas of the system disk. The instructions in a virus used to modify files or system configuration, and allow the file, the virus is copied to another disk or computer. A virus can invade the machine when he was transferred infected information: for example, through a disk, a serial port, a modem or network; Or even, until visiting a page infected, as is the case today a day with the virus W32/Haptime.
The viruses are designed to perform three basic objectives: i) Be capable of replication ii) Comply with the task for which they were designed (since mandar a simple message even destroy all information of a corrupt your hard drive and boot sector) Iii) self-protection to survive. The defense is the incubation time, resistance (in some cases it is called capacity of concealment or polymorphism).
The creation of new computer viruses is a growing problem, as it is with biological, given the exponential growth similar to a colony of bacteria without natural enemies, viruses have no other enemy than antivirus software, firewalls and Personal Minimum prevention by users; viruses us in an overwhelming amount.
