What does the term forensic image refer to in digital investigations?

What does the term forensic image refer to in digital investigations?

• A. A bit-for-bit copy of a storage device created for analysis while preserving the original.
• B. A text summary of the device's contents.
• C. A screen capture from the device.
• D. A backup created for user convenience.

Answer: (A)

A forensic image is a precise, bit-for-bit duplicate of a storage device created for analysis while preserving the original. It captures every bit, including hidden sectors, slack space, and deleted data, so nothing relevant is missed. The process uses write blockers and cryptographic hashes to prove the image is an exact copy and has not been altered. This allows investigators to analyze in a controlled environment while keeping the original evidence intact for court and for proper chain-of-custody documentation. A text summary, a screen capture, or a user-oriented backup do not provide this complete, forensically sound duplicate.