The most common forms of evidence are direct, real, documentary, and demonstrative.

Cyber investigators handle different types ofdigital evidence, including:

Direct Evidence– First-hand observations or testimony.

Real Evidence– Physical devices such as hard drives or USBs.

Documentary Evidence– Emails, chat logs, digital contracts.

Demonstrative Evidence– Graphs, diagrams, or simulations illustrating data.

Understanding these types helps ensureproper legal handling of evidence.

Reference:

McAfee Institute Digital Evidence Classification Guide

Federal Digital Forensics Guidelines

DOJ Cybercrime Investigation Procedures