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A Firefox tutorial add-on for adult absolute beginners, to provide information on and to build up understanding of the threats and features of the web. Suggestions to security plugins, links to web howto's. Includes basic navigation help.

Thumbnail steganography creates a thumbnail from a source image and stores data in it by altering it's color channels. To decipher the data, a new thumbnail is made from the original image and the differences between the pixels are calculated.

Steghide is a steganography program that is able to hide data in various kinds of image- and audio-files. The color- respectivly sample-frequencies are not changed thus making the embedding resistant against first-order statistical tests.