Most of the time, programs that arrive by modem or a trade are perfectly safe to use. Most computer users have heard about computer viruses. But each virus is different.
Where do these viruses come from? They certainly don't float around in the air like some human viruses.
Commercial and shareware programs have been created with the sole purpose of detecting and fixing suspect programs that might be viruses infected. A computer virus is the result of a destructive program that someone has written and placed inside a computer program, which unsuspecting people then place in their computer system. Instead, like any other computer program, a human must create them.
When this program enters your computer through your input device, it hides in your computer's memory and starts to duplicate itself like a disease. These detection programs should be ran when any disk is put into your disk drive or every time your computer is first started up each day to scan the computer's hard drive. Some people create these programs out of meanness to get even. Some display strange messages on your computer screen; others make small changes in your computer programs. Why do you thing people create these very destructive programs? How does your computer get a virus? Almost exactly the way humans do. When you save your data, you also save the virus..
Some viruses can erase all the information from the place where it's stored on the computer's hard disk.
Why do people create them? It's hard to say. Slowly but surely, the virus crowds out your data and causes major system problems.One might think of a computer virus as a tiny computer program designed to perform mischief. While others create them just as a challenge. In this way, it can slowly infect all your programs before you know that it exists.
If the virus is on your disk or hard drive, it will return to the computer when you use the program again. However, you do stand a chance of getting a program that has been tampered with. Here a computer program virus is hiding inside the normal program. Others get contaminated computer programs through the use of modems, which allow computers to communicate over telephone lines (ie. The computer gets exposed to one.
The virus can't affect the computer's ROM (Read Only Memory), but it can affect RAM (Random Access Memory) and your computer disks. Many computer programs that are traded were copied illegally. If you switch from one program to another without shutting down the machine, the virus will attach itself to the new program.
Many people get contaminated computer programs by trading programs with other people. Well, its not quiet that easy. Today millions of dollars are being spent to rid and protect computer systems from these virus programs. When your shut off your computer a virus that has been picked up will be lost, just like any other memory that is held in RAM
Where do these viruses come from? They certainly don't float around in the air like some human viruses.
Commercial and shareware programs have been created with the sole purpose of detecting and fixing suspect programs that might be viruses infected. A computer virus is the result of a destructive program that someone has written and placed inside a computer program, which unsuspecting people then place in their computer system. Instead, like any other computer program, a human must create them.
When this program enters your computer through your input device, it hides in your computer's memory and starts to duplicate itself like a disease. These detection programs should be ran when any disk is put into your disk drive or every time your computer is first started up each day to scan the computer's hard drive. Some people create these programs out of meanness to get even. Some display strange messages on your computer screen; others make small changes in your computer programs. Why do you thing people create these very destructive programs? How does your computer get a virus? Almost exactly the way humans do. When you save your data, you also save the virus..
Some viruses can erase all the information from the place where it's stored on the computer's hard disk.
Why do people create them? It's hard to say. Slowly but surely, the virus crowds out your data and causes major system problems.One might think of a computer virus as a tiny computer program designed to perform mischief. While others create them just as a challenge. In this way, it can slowly infect all your programs before you know that it exists.
If the virus is on your disk or hard drive, it will return to the computer when you use the program again. However, you do stand a chance of getting a program that has been tampered with. Here a computer program virus is hiding inside the normal program. Others get contaminated computer programs through the use of modems, which allow computers to communicate over telephone lines (ie. The computer gets exposed to one.
The virus can't affect the computer's ROM (Read Only Memory), but it can affect RAM (Random Access Memory) and your computer disks. Many computer programs that are traded were copied illegally. If you switch from one program to another without shutting down the machine, the virus will attach itself to the new program.
Many people get contaminated computer programs by trading programs with other people. Well, its not quiet that easy. Today millions of dollars are being spent to rid and protect computer systems from these virus programs. When your shut off your computer a virus that has been picked up will be lost, just like any other memory that is held in RAM
