Computer Viruses and Their Treatment Methods | Free Antivirus Software
The viruses that infect the human body do not differ from the viruses that infect the computer, the goal is one, which is to spread, and to inflict damage, like viruses that infect the computer corrupt all files and data through some steps that the user takes spontaneously and unintentionally, and therefore we will explain to all computer users And the Internet is ways of transmitting viruses in a computer, their types, and their names, and how to discover them, and finally, which is the most important way to prevent computer viruses, follow us.
Computer viruses
Computer viruses are malicious programs that are loaded on the device without the knowledge of the user, and then virus infection spreads, as the virus self-replicates by copying itself to another program, because the goal of computer viruses is to infect computer systems, control them, and steal users' data, The unfortunate news about computer viruses is the emergence of sophisticated viruses with high capabilities that can hide from anti-virus programs, as the development of viruses enables them to change their code and spread dynamically, so detection and identification of the virus became very difficult.
The names of viruses in the computer
Featured computer viruses for the first time in the seventies of the last century, it was called the name of the Creeper virus, and in 1981 the first virus emerged and spread through floppy disk drives produced by Apple, not so by, but According to the promotion of information technology, the number of viruses has risen to 52 151 in In 2004, with the use of anti-virus software, the number of these viruses decreased to about 14,000 in 2010.
Computer viruses work from only two methods, the first method, and as soon as the virus reaches a new computer, it begins to work and copies itself, while the second method for the second type remains in which the virus remains dormant until the user runs the infected program and then begins to work corrupt.
Methods of transmission of viruses in the computer
One of the ideal ways in which the virus spreads is through e-mail messages, by opening the attached files and links in the e-mail, or by visiting a website infected with these viruses, or by clicking on an executable file link, or by seeing an advertisement that is not trusted by the source, and while using storage tools Such as removable (USB) flash drives.
Virus types :
There are many different types of viruses that infect computers with their destructive design, and they are as follows:
Resident virus (Resident Virus):
They live in the computer's RAM and can interfere with normal system operation, which can lead to file and program corruption. Some of the most common examples of resident viruses (CMJ, Meve, MrKlunky, and Randex) are.
Multilateral virus (Multipartite Virus):
This type of virus can easily spread in a computer system, is considered extremely dangerous viruses, and lead to unauthorized actions in the operating system, folders, and other programs on computers.
Implementation of direct virus (Direct Action Virus):
These viruses attack certain types of files like exe files. And com. The main purpose of this virus is to copy and infect files in folders, and it does not usually delete files or affect the performance and speed of the computer, and it can be easily removed by anti-virus programs.
Browser hijacker virus :
This type of virus infects the web browser and transfers the user to many different websites, so if you enter a link in the search bar in the browser, the virus opens several fake websites and these sites are harmful to the computer, most reliable browsers have guaranteed features inside them to directly block this Type of virus.
Virus Writing (Overwrite Virus):
This virus overwrites the content of the file and losing the original content, this type infects folders, files, and even programs, to delete this virus you need to know the infected file and get rid of it, so it is important to back up the intact private data to return to it in such a case.
Web virus software BB Web Scripting Virus:
This virus comes from some links, advertisements, image sites, and video clips that may contain harmful codes, in which viruses are downloaded automatically or when you enter malicious websites.
Virus Utilities (Companion Virus):
This is a type of virus that does not work without attaching an existing file or folder to the infection, as the file associated with associated viruses must be opened for the virus to start its work, such as Terrax.1069, Stator and Asimov.1539.
Network virus (Network Virus):
This type of virus is spread over the local network (LAN) and across the Internet, the number of these viruses increases through shared resources including drives and folders. When network viruses enter your computer, they search for their potential prey, such as Nimda and SQLSlammer.
Computer virus detection
There are some ways that you can find out if your computer is infected with viruses or not, and they are as follows:
Pop-up ads start showing up everywhere
Sometimes the ads are legitimate products and other times they contain links to malicious websites that will try to infect your computer with viruses.
Your browser keeps redirecting
If you find that trying to search on Google leads you to unfamiliar search sites then you are facing a problem. If you suspect there is a problem, search your browser settings and disable or delete any extensions that you did not previously install.
The unknown app sends hidden warnings
Creating and distributing counterfeit anti-virus programs is a profitable business, as those responsible for this use drive downloads or other technologies to bring fake viruses into your system and then send scary warnings about these viruses, and, naturally, searching for viruses using a fake anti-virus is noticeable quickly because it is in fact. He does not do anything.
Mysterious posts on your social media sites
Malware that focuses on Facebook and other social media sites spread by creating fake posts, as these posts usually contain disgusting cases or links of some kind, and anyone who falls into the trap and presses these links will be the next victim of these viruses.
You may be required to pay a ransom
Some malicious programs use your device or data to request ransom, as some encrypt all photos and documents and demand payment of money so that you can recover them, while others claim that it is from a government office or others and they tell that the user's computer has already been used to send unwanted messages. They ask you to pay a fine before you are allowed to use it again, and even if you respond to them and pay them, you may not be able to recover your data.
Disable your system tools
One of the evidence of the presence of viruses that can be easily detected, as the smart user who suspects the presence of malware on his device can run the Task Manager to verify the settings by using the Registry Editor if the user suddenly notices that the use of these tools or the use of other system tools led to A message appears that states that the administrator has disabled it, as there may be an attempt by malware on his device to defend itself.
Everything looks completely normal
Where some types of malware do their best to hide all activities, without leaving any visible trace, and even if you see that everything is normal, there may be programs used for remote spyware that collect your personal information.
Methods of preventing computer viruses
You should not wait until you discover the presence of viruses on your computer, but you can take preventive measures by the following:
Make sure to keep your device's system and software updated regularly.
Do not click or access untrusted links.
Back up all data on your computer.
Make sure to use strong and complex passwords consisting of numbers and symbols.
Use a firewall for your computer.
Check your downloads and security settings in your web browser.
Use mechanisms to block pop-up windows on internet browsers.
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