In FOR508, what is data carving and when is it used?

• A. Recovers files by signature-based search when filesystem metadata is damaged or absent; used after damage or deleted files suspicion.
• B. Backups entire drive for restoration.
• C. It's a Windows registry feature for organizing data.
• D. It's a technique to compress data.

Answer: (A)

Data carving is the process of recovering files directly from raw disk data by locating known file-type signatures (magic numbers) and then reconstructing the file boundaries, even when the filesystem’s metadata is damaged or absent. This approach is used when the filesystem structures are unreliable—such as after damage, corruption, or deletion—so you can pull out whole files or fragments by scanning unallocated space, slack space, or entire disk images for those signatures. It relies on the content of the file rather than the directory entries or file system indexes, making it a crucial technique in forensics when metadata can’t be trusted. It’s not about backups, registry features, or data compression; it’s about extracting data based on recognizable file signatures to recover what the filesystem cannot directly enumerate.