
Computer Security by S.A. Hewathanthrige
essayWhy Organizati
ons need security? As discussed above, the organizati
ons
in this century more
increas
ingly depend
on data communicati
on for the daily bus
iness communicati
on, database
informati
on retrieval and the
internetwork
ing of LAN's. This led the management
into more c
onsiderati
on on c
onvert
ing manual operati
ons
into computerized systems and relay
on them.
In fact, organizati
ons then c
onsidered that "....many potential
hazards such as fraud, errors, lost data, breaches of privacy and the disastrous events that can occur
in a data communicati
on" (3) The above c
onsiderati
on statement was c
onsidered about fifteen years ago but still holds valid reas
ons. Computer and network address three requirements:
1. Security Requires that the
informati
on in a computer system
only be accessible for read
ing by authorized pers
onnel or parties. This type of access
includes pr
int
ing, display
ing , and other form of disclosure,
includ
ing simply reveal
ing the existence of an object.
2.
Integrity Requires that the computer system access can vibe modified
only by authorized pers
onals. Modificati
on includes writ
ing, cha
ining, chang
ing status, delet
ing, and creat
ing.
3. Availability Requires that the computer system access are available to authorized pers
onnel.