Los Angeles Fusion Center: Steganography Intelligence Bulletin
Los Angeles Fusion Center: Steganography Intelligence Bulletin
Steganography—the practice of concealing data within a carrier—may be used to obscure malicious or criminal information and activity from law enforcement. While steganography dates to the fifth century BC, it has long been regarded as, and remains, one of the most advanced forms of clandestine communication. In modern usage, the Internet allows accessibility to, and broad dissemination of, steganography tools, and its application continues to evolve with technology. Understanding steganography in its current state is essential to its identification and detection.
Detection
Detecting steganography is challenging; in fact, determining whether media contains extraneous data is nearly impossible. Generally, detection occurs only through direct knowledge of its existence, evidence of steganography tools, or chance. Some indicators of steganography may include:
• Conspicuous and unusual sharing of digital media files via peer-to-peer (P2P) clients, e-mail, or uploads to Web sites
• Repeated sharing of the same file
• Possession of steganography software, or visiting sites known to contain steganography
• Sharing of content that is inconsistent with a subject’s life, such as pictures of children when he or she is not known to have any
• Possession of two or more copies of a file that do not look/sound identical, that is, the same image but of varying sizes and hash values
• Presence of files whose large size is unusual for the type of content
• Possession of books or articles on—or, expression of interest in—cryptography or steganography
http://publicintelligence.net/lajric-steganography/
Note to jury: This is a govt document and not an endorsement of any techniques. I mention this because of the thread below that was locked and seen as somehow supporting/accusing OWS (or me of promoting) of certain techniques. I did not write it (nor did I write the one below) it is (like the one below) a government document used by fusion centers.
Los Angeles Fusion Center: Methods to Defeat Law Enforcement Crowd Control
http://www.democraticunderground.com/100210724