Types of steganography

 There are many types of steganography, but the most common in the cyber security world are digital steganography and physical steganography.

Digital steganography is the hiding of data within digital media, such as images, videos, and audio files. The data can be hidden in the file itself or in the metadata associated with the file. For example, an image file might have its hidden data encoded in the least significant bit of each pixel. Audio files might have their hidden data encoded in the silent portions of the sound wave. Physical steganography is the hiding of data within physical objects, such as books, envelopes, and even people. For example, a book might have its hidden data encoded in the pattern of the paper fibers. An envelope might have its hidden data encoded in the watermark. And a person might have a hidden message tattooed on their body. Both digital and physical steganography have their advantages and disadvantages. Digital steganography is difficult to detect, but it can be easily destroyed if the file is corrupted or the data is extracted improperly. Physical steganography is more difficult to destroy, but it can be more easily detected if the physical object is inspected closely. Cyber security experts often use a combination of both digital and physical steganography to protect their data. By hiding their data in multiple places, they can make it much more difficult for an attacker to find and destroy all of the data.