Victor works as a professional Ethical Hacker for SecureNet Inc. He wants to use Steganographic file system method to encrypt and hide some secret information. Which of the following disk spaces…

Slack space is the unused portion at the end of a file's last allocated cluster and is a standard steganographic hiding location because the operating system does not surface this area during normal file access.

A hidden partition is a disk partition deliberately excluded from the standard partition table or mount points, making it an effective container for concealed steganographic data invisible to routine system inspection.

Dumb space is not a real or defined concept in disk storage, file systems, or steganography; it is an invented term that corresponds to no actual disk region or data hiding technique.

Unused sectors are physical disk sectors not allocated to any file system structure or file, providing raw storage space where steganographic data can be embedded without appearing in directory listings or file allocation tables.