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If an operating system allows sequential use of an object without refreshing it, what security issue can arise

If an operating system allows sequential use of an object without refreshing it, what security issue can arise?

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A.
Disclosure of residual data

B.
Unauthorized access to privileged processes

C.
Data leakage through covert channels

D.
Compromise of the execution domain

Explanation:
A: If an object has confidential data and these data are not properly erased before another subject can access them, this leftover or residual data can be accessible. This can compromise the data and systems security by disclosing this confidential information. This is true of media (hard drives) and memory segments.


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