In forensics, what is the purpose of image verification?

• A. To encrypt the image for secure storage.
• B. To verify the integrity and exact replication of the data.
• C. To compress the image for faster transfer.
• D. To delete the source media after imaging.

Answer: (B)

Image verification centers on preserving the trustworthiness of digital evidence by proving the copy is an exact, bit-for-bit replica of the original. In practice, you create a forensic image of the evidence and generate a cryptographic hash for both the original media and the captured image. When these hash values match, you have strong assurance that the copy is identical to the source and that no data was altered during imaging or transfer. This makes results reproducible and supports the chain of custody, since anyone can recompute the hash and confirm the copy’s integrity. If even a single bit changes, the hash changes, signaling tampering or corruption. This purpose is different from encrypting data (which hides content), compressing data (which reduces size), or deleting the source (which destroys evidence).