Computer Viruses: Infection Vectors, And Feasibility Of Complete Protection

Title	Computer Viruses: Infection Vectors, And Feasibility Of Complete Protection
# of Words	565
# of Pages (250 words per page double spaced)	2.26

Computer Viruses: Infection Vectors, and Feasibility of Complete Protection

Computer Viruses: Infection Vectors, and Feasibility of Complete Protection

     A computer virus is a program which, after being loaded into a
computer's memory, copies itself with the purpose of spreading to other
computers.
     Most people, from the corporate level power programmer down to the
computer hobbyist, have had either personal experience with a virus or know
someone who has. And the rate of infection is rising monthly. This has caused a
wide spread interest in viruses and what can be done to protect the data now
entrusted to the computer systems throughout the world.
     A virus can gain access to a computer system via any one of four
vectors:
     1. Disk usage: in this case, infected files contained on a diskette
          (including, on occasion, diskettes supplied by software
          manufacturers) are loaded, and used in a previously uninfected
          system thus allowing the virus to spread.
     2. Local Area Network: a LAN allows multiple computers to share the
          same data, and programs. However, this data sharing can allow
          a virus to spread rapidly to computers that have otherwise been
          protected from external contamination.
     3. Telecommunications: also known as a Wide Area Network, this
          entails the connection of computer systems to each other via
          modems, and telephone lines. This is the vector most feared
          by computer users, with infected files being rapidly passed
          along the emerging information super-highway, then downloaded
          from public services and then used, thus infecting the new system.
     4. Spontaneous Generation: this last vector is at the same time
          the least thought of and the least likely. However, because
          virus programs tend to be small, the possibility exists that
          the code necessary for a self-replicat...

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