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Embedded within explicit photos on some pornographic web sites lurk the dirty little secrets of terrorists associated with Saudi exile Osama bin Laden, these unnamed sources say (USA Today, February 5). military tribunals terrorism, terrorism in the philippines, pictures of war on terrorism, bush terrorist attack, causes of war on terrorism, terrorist attacks on the united states, preparing for terrorism, ethics of war and terrorism, algerian terrorism, terrorism in marocco Body fat analysis. The cloaked information posted on a variety of highly trafficked web sites has allegedly included maps, targets, and instructions related to terrorist activities. Steganography, the ancient practice of concealing information, is a shadowy cousin to the more obvious and well-known practice of encrypting secret messages. When a message is encrypted, its contents are more or less jumbled in order to baffle anyone who might intercept it. military tribunals terrorism, terrorism in the philippines, pictures of war on terrorism, bush terrorist attack, causes of war on terrorism, terrorist attacks on the united states, preparing for terrorism, ethics of war and terrorism, algerian terrorism, terrorism in marocco Causes of war on terrorism. But if something is "stegoed," it is secreted out of sight, like invisible ink. No one but the sender and recipient know it's there, making its discovery much less likely. When used together, the two techniques, encryption and steganography, pose a double whammy for code-breakers. military tribunals terrorism, terrorism in the philippines, pictures of war on terrorism, bush terrorist attack, causes of war on terrorism, terrorist attacks on the united states, preparing for terrorism, ethics of war and terrorism, algerian terrorism, terrorism in marocco Successful weight loss. With the Internet, steganography has come of age. Stego-tools-free and easily downloadable software programs-take advantage of the unused space in audio, text, image, or video files and create a secret hiding place for embedding data. Take an image of Osama bin Laden, for example. Then take a map. A stego-tool can be used to hide the map file under the "cover image" (stego-speak for the original file). You have the digital age equivalent of invisible ink. Actually, there isn't much to see. Most stego-media are indistinguishable from unaltered files-which is, in fact, the whole point. An Internet surfer could be looking at a photo of a blonde bombshell and not realize he's also looking at . . . well, hidden data involving another kind of bombshell. To recover a hidden message posted on the web, the sender must first tell the intended recipient where to find the stego-media; then the recipient can extract the information using the same software that created it. Because intercepting stego-files is so difficult, and dissemination so simple, steganography has become a popular means of communication for those who prefer to fly below the radar, which includes everyone from privacy nuts who stego their regular e-mails, to the terrorists who want to stego-smuggle information around the globe. According to USA Today, electronic steganography has become so vital to subversive groups that it is taught at Afghani and Sudanese extremist camps. The idea of religious extremists concealing their plots against "the infidels" on sites trafficking in explicit sexual content is more than a little ironic.
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