What is a computer virus
What is a computer virus
Introduction:
Those who use computers or Windows must have faced the problem of viruses at some point. The truth is , no matter how powerful software or antivirus you use, there will be a risk of virus attack on your computer. Because a virus is a program that is created by many skilled people and new viruses are
constantly being created that cannot detect the software installed on our PC. I hope today’s discussion will clarify why it cannot be detected.
We all know that when our PC is infected with a virus, it starts behaving strangely.
It may become slow, perform poorly, software crashes, etc. However, these problems can also be caused by other reasons, which is a different story.
You can’t find the right solution to a virus until you are sure what type of virus it is. The scariest thing is that some viruses attack without you even realizing it, but they keep wreaking havoc in the background.
It cannot be said that abnormal behavior will always be caused by a virus attack. Today I am going to talk about this topic, by looking at which signs you will be able to understand that your beloved computer is infected with a virus and how to eliminate it.
What is a computer virus
We all know that computer viruses and human disease-causing viruses are not the same. But the interesting thing is that these two viruses have a lot in common. Just as one of the main features of human viruses is that they can produce many viruses on their own, computer viruses can also produce thousands of viruses on their own in an instant.
What is a computer virus
A computer virus is actually a computer program that can run on an operating system. We can call computer programs that are normally dangerous computer programs. A computer virus can enter a computer and perform various tasks without the operator’s command in a very short time or can create multiple viruses. The purpose of a computer virus is to take control of your computer or destroy your system.
If we look at the way it attacks, we can see that it can be like a human virus. It can spread from computer to computer and can also be inside other programs or software.
Virus attack
New viruses are constantly being created to attack computers. Most of the targets are those who are constantly browsing the Internet on their computers. Hackers are very skillful in setting their viruses in other software or programs through which your computer can be controlled by them with a single click.
They first develop the virus through coding and check it on various vulnerable devices and plan the type of attack.
Some people infect your system with viruses to get money, some people hack into your system to monitor you, some people steal your information, and some people do these things for money. For example, buying fake software or confiscating your necessary files and asking for money.
How Computer viruses Work
Just as flu attacks various organs or the immune system in our body, computer viruses attack your PC and various programs as well as your antivirus. For example, malicious software can be installed without your knowledge, or a spy code can be activated, through which all your activities are tracked on another computer or the internet.
What the vires basically dose after entering the computer is that the malicious program becomes active with the user’s permission, and before the legitimate code can be executed, it is loaded into the computer’s CPU memory
Now the question may come to your mind that how to get user permissions? When you click on a program, that will be considered as user permission.
Once loaded into memory, the virus will continue to spread rapidly by attacking various programs and applications and spreading malicious code.
How Computer viruses Work
Whether the virus is a boot sector virus or another virus, it injects malicious code into your system, allowing it to attack the boot sector before any programs or files can be controlled, even before the operating system loads.
In this way, the codes become active in the operating system and do what its creator wants, which is also called Payload. After this, it scans your computer’s hard disk, especially collecting various sensitive information such as various social media, email passwords, usernames, bank account numbers, ect. And you may understand well what hackers can do using this information.
Moreover, they can encrypt all your important file folders ask for a huge amount of money.
In the past, viruses were spread to computer through various floppy disks, pen drives, or memory sticks,
but now they are spread from the internet, from email files, through installing or downloading various
software.
How to tell if your PC is infected with a virus
since there are different types of computer viruses, it is natural that their behavior will also be different.
You may be able to recognize some of the virus attacks and some may not be able to be detected unless
you pay close attention. However, some of the symptoms are discussed below,
1.Slow computer
if your computer takes too long to boot or any program takes too long to rung, your PC may be infected
with a virus. Although there may be other reasons for a slow PC, when a virus enters the computer and
scans data or does other tasks, it affects the PC’s performance.
2. Strange use of the fan
We know that the fans in the PC help keep our computer cool and expel hot air , and when heavy work is
being done, such as gaming or graphic designing, it spins relatively more. But when you see that the
computer is getting hot even when no work is being done and the fan is spinning excessively, then you
will understand that it is a virus attack .
3. frequent system errors
If your computer frequently gets blue screen or black screen errors, then it means that it is infected with a
virus. These errors can be due to overheating, driver problems , hardware issues, or any other operating
problem. One of the reasons for this can be a virus .
4. Slow internet speed
Virus attacks can sometimes slow down your internet speed. The main reason for this is that they use the
internet to access your files or data and hijack your bandwidth. There is an easy way to catch this, when
you see that your browsing is very slow but other services are using the net at a very high speed, then you
will know that there is a problem here.
5. Strange browser extensions
Sometimes you may see unfamiliar extensions in your browser that you did not install. You will
immediately realize that your beloved computer is infected with a virus.
6. Browser redirect
A common symptom of a computer virus is being redirected to an unfamiliar or unwanted page. When
you notice that your browser is repeatedly redirected to a page that you did not request, you will know
that it is the work of a virus or malware. software is installed, or an attempt is made to generate revenue
through ad impressions.
7. Unwanted pop-ups
If pop-ads start showing on your system or browser, then it means that your computer is infected with a
virus. This can slow down the browser. Sometimes, ads for various products or antiviruses can show from
the bottom right side of the screen.
8. Social media spamming
When your social media account publishes unusual tunes that you didn’t make or your friends receive
spamming messages, you’ll realize that your computer’s information has been stolen and your computer
is infected with a virus.
9. Antivirus not working
Our PC’s antivirus software basically protects us from viruses. But sometimes some viruses can disable
our antivirus and prevent it from scanning or updating.
When you see your antivirus behaving abnormally and repeatedly issuing warning, you will know that
your system is under threat.
Last words :
At the beginning, I was saying that sometimes even the antiviruses installed on our PC cannot detected
new viruses. why does this happen? Antiviruses have specific extensions or coding saved in the database
and are constantly updated through which they can detect whether a virus has entered. But when a
hacker creates a completely new virus, with new code or extensions, in most cases it becomes difficult for
any antivirus to detect it.
Be sure to tune in and let us know how today’s tune went. Stay well until the next tune . Trust in Allah , Ha-fez.
