A System programmer have access to computer room, it is
possible that he may undertake some unauthorised activities
at any time, due to his deep knowledge how can a control
build to avoid the risk?
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Answer Posted / nimesh maru
This is answered with the CISSP perspective.
implement 1] Seperation of Duties : This will make sure that
one individual cannot complete a critical task by himself.
so we would have 2 ,3 or 4 people doing the 1 task.
Now if they want to do something malicious or unathorized
they all would have to come together to perform the task,
which detters the person from doing it. This act of all
people coming together to complete the task is also called
Collusion.
Further Seperation of duties shall be broken down in to
Split Know ledge and Dual Control.
Split Knowledge : No one person has complete knowledge of
performing one task or required information.
Dual control : here 2 or more individuals must be present
and active in participation to complete the task.
2]Job rotation : No One person should stay in one position
for long period of time as they would then have good
knowledge and would know inside out of entire process and
would be able to bypass or circumvent controls put in place
for the santity of the process and compliance.
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