One of the ongoing problems in the computer in the computer field is thee introduction to computer virus is a program containing code of itself. Viruses have the potential to destroy and disrupt computer systems and computer networks. It may or may not damage data or other programs residing in the computer in the system. Viruses are made to do many things like making innumerable copies of themselves, erasing storage devices, data corruption, data loss and displaying messages or graphics. It is the intellectual creation of the computer programmer. Computer viruses are written to affect your computer adversely without your knowledge. Viruses can easily hide within a system by attaching themselves to other files or programs because they are small in size. The ability of a virus to replicate enables it it infect files and programs. Some of the features of a computer virus are listed below:
- The computer virus may cause problem immediately.
- It may count specific occurrences: for example, how many times it is copied, and then causes damage.
- It may look at the computer's clock and cause damage on a specific date.
- It may reproduce itself and then cause damage.
Normal programs are your assistants. Virus programs are written with a motive to cause trouble and harm. A computer virus is usually activated data or programmes or files to which it is attached is executed or accessed. So some stay active in memory until the computer is shut down. Other viruses stay active only as long as the infected application is running. So, technology is helping people in many ways but due to the certain kind of problem the helpful things are being wasted. One of the things is "computer virus".
