Steganography is often demonstrated by hiding data in which of the following media?

Steganography is often demonstrated by hiding data in which of the following media?

• A. A plain text note
• B. An image
• C. An audio file
• D. A video file

Answer: (B)

Steganography hides a secret payload inside another carrier file so it remains unseen by casual observers. Images are a classic demonstration because they offer a lot of data and small changes to the pixels can be made without producing noticeable visual differences. The usual approach, modifying the least significant bits of pixel values, lets you embed many bits with minimal impact on the image’s appearance. While data can be hidden in audio or video as well (and in text in some schemes), images provide the best balance of large capacity and perceptual invisibility for a clear, illustrative example.

Steganography hides a secret payload inside another carrier file so it remains unseen by casual observers. Images are a classic demonstration because they offer a lot of data and small changes to the pixels can be made without producing noticeable visual differences. The usual approach, modifying the least significant bits of pixel values, lets you embed many bits with minimal impact on the image’s appearance. While data can be hidden in audio or video as well (and in text in some schemes), images provide the best balance of large capacity and perceptual invisibility for a clear, illustrative example.