Discuss the key process that a forensic analyst could use

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“Digital Forensics”
Discuss the key process that a forensic analyst could use in order to preserve the verifiable integrity of digital evidence. Next, identify the main tools or technologies that the forensic analyst could use in order to ensure that the original evidence is unmodified.
-1 reference
-no plagarism.
-follow attachment
http://digital-forensics.sans.org/blog/2011/01/26/preserve-cyber-investigation-evidence-screencast-tool