steganography
nounUK /ˌsteɡəˈnɒɡrəfi/
US /ˌsteɡəˈnɑːɡrəfi/
Steganography is the trick of hiding a secret message inside something that looks normal.
The spy used steganography to hide the plan inside a picture of a cat.
RELATED WORDS
OTHER MEANINGS
2. The practice of hiding data within digital files such as images or audio.
Investigators found steganography in the photo's pixels.
3. The ancient art of writing messages in invisible ink or disguised forms.
Ancient Greeks practiced steganography by tattooing messages on slaves' heads.
4. A method of protecting information by making its very existence secret.
Steganography differs from encryption because the message is not just scrambled but hidden.