Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The practice of hiding messages, so that the presence of the message itself is hidden, often by writing them in places where they may not be found.
  • n. Specifically: the use of small files in computers to communicate secret information.

from the GNU version of the Collaborative International Dictionary of English

  • n. The art of writing in cipher, or in characters which are not intelligible except to persons who have the key; cryptography.
  • n. The branch of cryptography in which messages are hidden inside other messages; -- used commonly for the process of hiding messages inside a computerized image file, as for example hiding the name and copyright notice of the owner of an image as protection against violation of the copyright.

from The Century Dictionary and Cyclopedia

  • n. The art of writing in cipher, or in characters which are not intelligible except to the persons who correspond with each other; cryptography.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. act of writing in code or cipher

Etymologies

From Ancient Greek στεγανός (steganos, "cover, roof") + γράφω (graphō, "I write") (Wiktionary)

Examples

  • If done correctly, and cleverly, detecting steganography is extremely difficult.

    The Volokh Conspiracy » End of an era?

  • Indeed, along with encryption, steganography is one of the fundamental ways by which data can be kept confidential.

    Smart Mobs » Blog Archive » What Exactly is Steganography?

  • To be sure, according to the FBI, the suspected Russian agents it rounded up sometimes communicated with Moscow via secret messages hidden in Web pages (in a process called steganography).

    Russian spy case reveals old espionage tricks

  • Others living in New Jersey and Boston used a technique called steganography, in which SVR handlers embedded messages into images on publicly available websites, the FBI said.

    U.S. Charges 11 in Russian Spy Case

  • The process is a network application of steganography, which is the ancient science and art of hiding messages in documents, pictures and other media in a way that can be easily detected by the intended recipient, but not by third parties.

    p2pnet World Headlines – May 29, 2009

  • British and U.S. intelligence sources suspect some of the site's lurid jihad photos and graphics contain secret messages embedded through a technology called steganography, for which free software can be downloaded from the Internet.

    Periscope

  • Several years later, Provos moved his research papers and software related to steganography, which is the science of hiding secret messages, from servers at the U.S.

    CNET News.com

  • Once decrypted, the agency's online puzzle, through a process experts call steganography, yields a hidden message in the form of a keyword.

    NYT > Global Home

  • The procedure, called steganography by printed arrays of microbes SPAM, starts in the lab where the bacteria are arranged in color-coded messages and grown on a petri dish.

    Gizmodo

  • The message that must then be decrypted is hidden within the image on the website; an example of a technique for secret communication called steganography.

    Telegraph.co.uk - Telegraph online, Daily Telegraph and Sunday Telegraph

Comments

Log in or sign up to get involved in the conversation. It's quick and easy.

  • Happily for the paranoid, a trio of researchers reckon they have come up with a way to send secret messages via Skype without tipping off censors or intelligence agencies that something fishy is going on. The three, Wojciech Mazurczyk, Maciej Karas and Krzysztof Szczypiorski, who all work at the Warsaw University of Technology, made use of a technique called steganography, cryptography’s lesser-known, less glamorous cousin. Whereas cryptography relies on the brute force of mathematics to make messages unreadable, steganography relies on stealth and cunning to make them undetectable, by hiding them within other, innocent communications. (A classic example is writing in invisible ink between the lines of an ordinary letter.) That way, potential eavesdroppers are not even aware that a conversation is happening.

    "Speaking with silence: Tinkering with Skype can allow people to send undetectable messages" - The Economist
    http://econ.st/WyHpdg

    February 6, 2013