steganography

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steganography

[‚steg·ə′näg·rə·fē]
(computer science)
The art and science of hiding a message in a medium, such as a digital picture or audio file, so as to defy detection.

steganography

(security)
Hiding a secret message within a larger one in such a way that others can not discern the presence or contents of the hidden message. For example, a message might be hidden within an image by changing the least significant bits to be the message bits.

[Chaffing and Winnowing: Confidentiality without Encryption, Ronald L. Rivest, MIT Lab for Computer Science, 1998-03-22].

steganography

Hiding a message within an image, audio or video file. Used as an alternate to encryption, it takes advantage of unused bits within the file structure or bits that are mostly undetectable if altered. A steganographic message rides secretly to its destination, unlike encrypted messages, which although undecipherable without the decryption key, can be identified as encrypted. For a white paper on the subject written by Neil F. Johnson of George Mason University, visit www.jjtc.com/Steganography. See ScramDisk and social steganography.
References in periodicals archive ?
Katzenbeisser, "A survey of steganographic techniques," in Information hiding, 2000, pp.
Liu, "A high payload steganographic algorithm based on edge detection," Displays, vol.
Tseng, "A steganographic method for digital images using side match," Pattern Recognition Letters, vol.
Steganographic technique proposed in this study uses 2nd bit plane substitution by secret message and then TPVD embedding over remaining 7-bit image to increase payload.
McAfee noted (http://www.ibtimes.com/growing-cyberthreat-steganographic-malware-hiding-images-2555102) increased incidents of steganographic malware , which involves embedding a secret algorithm within an image.
At steganographing the confidential information (CI) or a digital watermark [3] (DWM) after preliminary coding, which result is the additional information (AI), as a rule, presented as the binary sequence, enwraps into a container using steganographic algorithm which in the presented work the digital image (DI) is used.
"Our business is to leverage emerging technologies, such as blockchain, crypto and steganographic techniques, but in a way that is simple and intuitive for end users," said co-founder Steve Cook.
These include steganographic approaches, multibiometric recognition, two-factor authentication, sample replay prevention, and sensor and sample authentication.
An Adaptive Image Steganographic Model Based on Minimum-Error LSB Replacement, [Online].
This downloader now delivers other malware via steganographic techniques.
Maybe the image was hiding some kind of steganographic code -- of the sort used by foreign spies and our future alien overlords!