For many decades, the concept of virus He referred to the organism formed by nucleic acids and proteins that have the ability to develop their reproduction inside certain cells. Currently, this meaning is still valid, although another meaning was also added to the term.
Today, the virus is called harmful software that, once installed in a computer (computer ), can destroy stored data. These viruses are specifically known as computer viruses .
A computer virus falls into the category of malware: software with malicious purposes. Its objective is to affect the operation of the machine without the user's warning or authorization. Why these programs he "Camouflage" behind a harmless appearance: they can be offered as games, movies or music, for example, but in reality it is a virus.
In addition to all of the above, we cannot ignore that it is important to establish that computer viruses arrive through different routes. However, it is usual for infections that generate them to occur through social networks, various devices such as pendrives that are infected, download pages, attachments in emails that have not been requested ...
In addition to all of the above, we cannot forget that computer viruses can be classified into different groups, among which are:
-Worms, which reproduce automatically and what they do is erase information we have in RAM.
-The Trojan horse, which is used to refer to the virus that is confused with a virus that is considered legal, but that, when executed, causes it to be done with absolute control of the device.
-The mutant viruses that, as the name implies, are the ones that are being transformed, are changing, so that they cannot be detected by the antivirus that is installed.
Suppose a person downloads a file from a site Internet , believing that it is an application to edit photographs. However, the file in question is a computer virus. Thus, when the user executes the file, the virus code is hosted in the RAM of the team. From then on, the computer virus goes on to control the essential functions of the operating system, infects other executable files and replicates to the hard disk (hard disk).
Computer viruses can erase information, saturate a net , display annoying posters or turn off the computer, among other possibilities. To protect a computer from infections and eliminate viruses, there are so-called antivirus , which are programs specially created to combat malicious software.
In order to ensure that our computer, tablet or similar device is protected from computer viruses, it is essential to carry out a series of basic measures. Among them is both proceed to install the aforementioned antivirus and do the same with a firewall and even resort to a little common sense. With the latter we mean not downloading anything that comes from unknown emails, not entering web pages that we believe may cause an "infection", ...