Which method is specifically associated with embedding data within common image file formats such as PNG, JPG, and BMP?

Which method is specifically associated with embedding data within common image file formats such as PNG, JPG, and BMP?

• A. Semagrams
• B. Image Steganography
• C. Text Semagrams
• D. Covered Ciphers

Answer: (B)

Embedding data inside common image file formats is a classic example of steganography, specifically image steganography. This technique hides a payload within image files by making tiny, often imperceptible changes to the image data or by placing information in parts of the file that aren’t typically examined. A common approach is to substitute the least significant bits of the pixel color values with the secret data, which usually leaves the image visually unchanged to the casual observer. PNG, JPG, and BMP formats store substantial pixel data, making them practical carriers for hidden information. The other options aren’t standard methods for hiding data in images, so they don’t fit as well.

Embedding data inside common image file formats is a classic example of steganography, specifically image steganography. This technique hides a payload within image files by making tiny, often imperceptible changes to the image data or by placing information in parts of the file that aren’t typically examined. A common approach is to substitute the least significant bits of the pixel color values with the secret data, which usually leaves the image visually unchanged to the casual observer. PNG, JPG, and BMP formats store substantial pixel data, making them practical carriers for hidden information. The other options aren’t standard methods for hiding data in images, so they don’t fit as well.