computer viruses
...us is in a memory, it can spread to any floppy disk inserted into the computer. A file virus inserts virus code into program files. The virus then spreads to any program that accesses the infected file. A Trojan horse virus (named after a Greek myth) appears to be useful but conceals an unexpected function, which is typically damaging. Trojan horse virus is one of the most common and, does relatively the least damage. Some viruses interrupt processing by freezing a computer system temporarily and then displaying sounds or messages. Other viruses contain time bombs or logic bombs. A time bomb is a program that performs an activity 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 similar to a virus, copies itself repeatedly until no memory or disc space remains. To detect computer viruses, antivirus programs have been developed Besides detecting viruses, antivirus programs also have utilities to remove or repair infected programs and files. Some damaged files cannot be repaired and must be replaced with uninfected backup files. Antiviral programs must be updated frequently because it is estimated that “200 viruses are discovered each month” (Long and Long, 2002) are created. An outdated antiviral program can provide false sense of security. There are many ways you can protect your computer from harmful viruses. In the book “Computers” (Long and Long, 2002) list some ways you can minimize your exposure to viruses. Here is an adapted version: 1. Delete emails from ...