Network Forensics is the prerequisite for any successful legal action after attacks on your Enterprise...

 Explanation:

Chain of custody refers to the documentation and handling process that ensures digital evidence is collected, preserved, and transferred without tampering.

It is the most critical factor for legal admissibility, ensuring the integrity of the evidence from collection to courtroom presentation.

 Why Other Options Are Incorrect:

A. Comprehensive log files: Logs are vital but meaningless in court without a proven chain of custody.

B. Trained forensic experts: Necessary for analysis, but uninterrupted chain of custody takes precedence for legal evidence.

D. Expert forensic witness: Important for interpreting evidence but secondary to evidence admissibility.

 EC-Council CISO Reference:

Emphasizes the importance of maintaining the integrity and admissibility of digital evidence through proper chain of custody protocols.