Perfect Computer Notes

A computer virus is a program or software that can disturb normal working of a computer system. A computer virus may cause many types of damage to a computer system. A Computer virus can attache to files in memory or disk. When we copy infected files from one computer to another, virus is also copied. A Computer virsu can harm a computer system in the following ways: Disadvantages of Computer Virus 1. Damage of Data, Information and Software A Computer virus may damage data, information and software of the computer. Data is the most important part of an organization. For example, a bank totally depends on financial transactions and any loss of even a little data can be dangerous. Moreover, if computer virus corrupts files of a software, you will have to reinstall the software. 2. Deletion of Stored Files A Computer virus may delete important data files stored in a computer. 3. Format Hard Disks A Computer virus can delete all data on hard disk by formatting the har...