Computer virus is the biggest enemy of computer Is it possible to avoid it?
How to avoid computer virus. What are the effects of computer virus?
As soon as computer virus is mentioned, the image of something that is painful and harmful pops up in mind. That is why it is now called virus. It is a hidden program that cannot be detected without antivirus software. According to the virus encyclopedia, a computer virus is a computer program that propagates itself and interferes with the computer hardware operating system (the basic program that runs the computer) and software. Be able to escape without being detected. There are also some other harmful computer programs that, while not viruses, can cause various problems. These types of programs can be divided into three categories.
(1) Trojan Horses
(2) Logic Bombs
(3) Worms
Trojans are deceptive programs that are both fun and annoying, often in the form of games. Its name is actually attributed to a historical event. When the city of Rai was not being conquered, the king who tried to conquer it offered to give a large sized wooden shod horse as a gift along with a request for peace, which was accepted. So at night the soldiers in the wooden horse who were in the horse for this purpose. opened the gate of the city and thus the opposing army conquered the city by deception. In the second category are logical hums that are made for a particular type of situation. For example, on a certain date or time and on a certain combination of words, they are immediately activated and do their work. The third category is a worm that simply creates copies of itself In a short period of time, they sit in the memory of a computer and the speed of the computer becomes very slow. These three types are distinguished from warlocks because they are limited in scope and cannot access many computers at the same time. However, they are called a type of virus.
The history of computer viruses is very interesting and long. In 1949, John Dan Newman, an American accountant who was associated with the Institute for Advanced Study in Princeton, New Jersey. Proposed the idea that it was theoretically possible for a computer program to replicate itself. This theory was tested at Bell Laboratories in the 1950s. They created a game, which featured him attacking and erasing his opponent's system. As for when the virus came into being? Everyone agrees that this feat was accomplished by the Alavi brothers of Pakistan in 1986. It will come as a real surprise to common Pakistanis that the credit of developing the world's first virus goes to two Pakistani brothers Basit and Amjad Alvi. These two young men from Lahore created the world's first virus called C brain in 1986. If you search the history of computer viruses on the Internet, you will find plenty of information about them. Almost all books on computer viruses clearly admit that the first virus was created in Pakistan by two young men named Basit and Amjad Alvi. Hard disk was not so common in those days. So most of the work was done on floppy disks. This virus, called C Brain, infects the boot scanner of floppy disks and turns computer bootable diskettes into non-bootable diskettes. Also used to corrupt data disks. The virus would change the diskette's volume label with words like: 12:00 1980-00-00 C) Brain) and a message would also pop up on the computer screen. Through which the people working on the computer knew that their computer had been attacked by a virus. Amjad was a university graduate and a computer geek. Amjad and Basit used to run a computer store each. He was very angry that other people copied his software so easily. They developed this virus that came to America through tourists coming to Pakistan reached. From where it was researched. This virus only affected floppy disks of KB 360. which were common in those days. In those days, a group of students of Karachi's NED University created an anti-virus software called Brain Booster, which used to eliminate this virus i.e. C Brain. This software was probably the first antivirus program in the world, so unfortunately this antivirus program did not get the fame that it did when it created the virus. Creating a virus and developing its anti-virus program is not an easy task and this work can only be done by people who are very skilled in software and who also have complete knowledge about computer hardware. Therefore, we can say that there is immense talent in Pakistan and in terms of mental abilities, our youth are not less than the youth of any country in the world. These viruses are sent through e-mail and then automatically send e-mails to all the e-mail addresses in each person's e-mail program such as Outlook Express. Thus there are as many e-mail addresses in the address book of the e-mail program. They are attacked by computer viruses and then infect millions of computers at a very high speed within a few hours. Usually it is a hidden program attached to an email which is activated by clicking on the attachment file and then starts doing its job. Thanks to the Internet, the number of viruses has increased thousands of times, whereas previously it was only spread through floppy disks or other mediums.
What should be done to avoid computer virus?//
What is a computer virus. How to avoid computer virus. What are the effects of computer virus?
There are a few things that are important to keep in mind to avoid computer virus attacks. If these precautions are taken, the chances of a virus reaching your computer and damaging it are very low.
(1) Any floppy disk should be scanned with an anti-virus program before working on it.
(2) Always keep an up-to-date version of anti-virus on your computer and update it regularly via the Internet. Viruses have different definitions. So they should be updated regularly so that no new virus can attack. In this context, the version 2001 of Narayan Antivirus is the best, which automatically keeps running this useful option. Norton at this time
Antivirus version 2001 provides you with protection from more than forty-eight thousand virus attacks as viruses are created all the time in the world. So the above mentioned option should be run again and again.
(3) All of the e-mail accounts you use on the Internet have a virus program that checks each e-mail on its own server before downloading it to your computer for viruses. Lets you know if. The Norton Antivirus program is always present in your system tray. You can take help from him anytime.
(4) Do not open an email from a stranger. Avoid opening the attachment, especially if there is a file attached to it.
(5) Be sure to perform a full scan of your entire system every week with a Norton anti-virus program. In this way, all the files on the hard disk are scanned and Norton Antivirus keeps you informed about whether or not there is a virus. Sometimes Norton Antivirus flags a suspicious file but doesn't tell you exactly whether it contains a virus or not. So he keeps this file in a temporary place. You can send this file to an antivirus company over the Internet. In this way, after some time, the company will check the file in its laboratory and tell you whether it is infected or not. This is because sometimes a data file hidden in a data file is found suspicious by Net Antivirus programs. It should be noted that every computer virus has a definition or symptoms. Based on which the antivirus program recognizes it. Therefore, each new virus has a specific definition. Based on which it can be identified. By taking precautionary measures there is a strong possibility that you will be able to avoid virus attacks but in modern times things are also becoming more modern. Recently a virus was discovered through a wallpaper installation, ie if you try to install a software with beautiful wallpapers according to an email sent by someone, the wallpaper will be installed, but at the same time It will also erase all data on your hard disk. The problem with antivirus software companies is that they keep up with new viruses Since then, it has introduced a new version of it, but by the time many computer users have been affected by its ravages. Creating virus programs is a legal offense in most countries around the world. In the United States, this offense is punishable by two years in prison and a heavy fine. But in most developing countries, no such laws exist at all, and thanks to the Internet, anyone can do this.
Beware of computer viruses
You should know that in medical terms, a virus is a microorganism that when it enters the system of the human body, paralyzes it by causing a malfunction. In the same way, a computer virus (a special type of small program) is inserted into the system of an electronic machine, which moves at a certain time and affects the system of the computer and paralyzes it. Since the basic causes of this computer disease and a bacterial disease introduced into the human body are similar, it is referred to as a computer virus.
Effects of Viruses on Computers
Although a virus attack on a computer can have various effects, we have listed a few for your interest.
A similar message may appear on the screen. For example ("YOUR PC IS NOW STAND")
The text on the screen starts to drop one character at a time.
It may also happen that a ball-shaped object jumps and starts moving around the screen.
Some viruses take effect when files start to disappear or become CORRUPTED.
Whenever you want to load a program, the computer will take excessive time for LOADING.
The disk volume VOLUME names will change.
The size of the executable table EXECUTABLE files will change.
The date and time of the files will be changed.
The free memory FREE MEMORY which is normally saved will be reduced.
Corruption of BOOTSECTOR boot sector of the disk
Box-like black spots may appear on the computer screen.
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