In order for evidence to be admissible in a court of law, it must be
relevant, legally permissible, reliable, properly identified, and properly
preserved. Reliability of evidence means that:

A.
It must tend to prove a material fact; the evidence is related to the
crime in that it shows that the crime has been committed, can
provide information describing the crime, can provide information
as to the perpetrators motives, can verify what had occurred, and
so on.

B.
The evidence is identified without changing or damaging the
evidence.

C.
The evidence is not subject to damage or destruction.

D.
The evidence has not been tampered with or modified.

Explanation:
This requirement is a critical issue with computer evidence since
computer data may be easily modified without having an indication
that a change has taken place. Answer a defines the relevancy of
evidence, answer b describes the identification of evidence, and
answer d describes the preservation of evidence.