Computer Viruses

A ready reckoner calculator computer virus is an illegal and potentially damaging computer schedule designed to infect other softw be by attaching itself to whatever software it contacts. In numerous cases, virus architectural plans are designed to stultification computer systems maliciously by destroying or corrupting entropy. If the infected software is transferred to or accessed by another computer system, the virus spreads to the other system. Viruses feed become a serious problem in upstart years, and currently, thousands of known virus curriculums exist (Reed 85-102).Three types of viruses are a iron boot sector viruses, turn on virus, and Trojan buck virus. A boot sector virus infects the boot program used to start the system. When the infected boot program executes, the virus is loaded into the computers shop. Once a virus is in memory, it can spread to any floppy disk inserted into the computer. A commove virus inserts virus code into program files. The viru s then spreads to any program that accesses the infected file. A Trojan horse virus (named after the Greek myth) hides at bottom or is designed to look the like a legitimate program.Some viruses interrupt process by freezing a computer system temporarily and then displaying sounds or messages. Other viruses contain time attacks or system of logic bombs. A time bomb is a program that performs an employment on a particular date. A logic bomb is a program that performs an activity when a certain action occurs, such as an employee being terminated. A worm, which is connatural to a virus, copies itself repeatedly until no memory or disk space remains. To expose computer viruses, antivirus programs have been developed.Besides the detecting of the viruses, antivirus programs excessively have utilities to remove or deposit infected programs or files. Some damaged files cannot be repaired and must be replaced with fresh backup files. The table below outlines about techniques use d to protect computer systems. add-in Techniques for Virus Protection and System sculptural relief Using Virus Protection software Backing Up Your System prove virus protection software on every computer system.Develop a stiff plan for copying and storing important data and program files. Before use, scan every floppy disk with a virus scan program to check for viruses. go for a backup plan and bond to its guidelines. Check all programs downloaded from the Internet or bulletin boards for viruses. Keep backup copies of files in fireproof safes or vaults or off-site If your system becomes virus infected and you have questions, contact the National Computer security measure Association (NCSA) for low-cost assistance (Elmhurst, 6 Nov. 1998).