Reference
Steganography & machine-readable text glossary
Concise definitions used throughout FugitiveAI. For canonical identity, relationships, and resource mappings, explore the Concept Graph.
- Acrostic
- A hidden-message construction in which selected initial letters or words form a secondary message.
- Answer hash
- A one-way server-side representation used by FugitiveAI to verify answers without shipping the expected answer to browser JavaScript.
- Base64
- A reversible binary-to-text encoding that represents bytes using a restricted printable alphabet.
- Carrier
- The visible or ordinary-looking artifact that contains a hidden payload.
- Code point
- The numeric value assigned to a Unicode character, commonly written as U+ followed by hexadecimal digits.
- CSS
- Cascading Style Sheets, the language browsers use to control presentation and layout.
- DOM
- Document Object Model, the browser-accessible tree representation of parsed HTML.
- Encoding
- A reversible mapping between representations of information that does not inherently provide secrecy.
- Glyph
- The visible shape used to render a character.
- HTML comment
- Source text delimited by <!-- and --> that browsers do not render as ordinary body content.
- Human-visible
- Information normally perceived from the rendered artifact without inspecting internal representation.
- Invisible Unicode
- Unicode characters that are present in a string but do not produce an ordinary visible glyph or primarily control formatting.
- Machine-readable
- Information that software can parse or recover from bytes, code points, source, metadata, structure, or another formal representation.
- Metadata
- Structured information that describes an artifact rather than forming its primary visible content.
- Normalization
- A transformation that converts text into a standardized Unicode representation such as NFC or NFKC.
- Non-breaking space
- U+00A0, a space-like character that prevents an ordinary line break at its position.
- Payload
- The information being concealed or transmitted through a carrier.
- Steganalysis
- The analysis of artifacts for evidence of hidden-information channels.
- Steganography
- The practice of concealing a message inside another artifact so the hidden communication is less obvious.
- Stegotext
- Text that carries a hidden steganographic payload.
- Unicode
- A standard assigning code points to characters and control functions across writing systems.
- UTF-8
- A variable-length byte encoding for Unicode code points.
- WORD JOINER
- U+2060, an invisible Unicode format character that inhibits line breaking at its position.
- ZERO WIDTH SPACE
- U+200B, an invisible Unicode format character that can indicate a potential line-break opportunity.
- Word-length parity
- A structural text channel that maps odd and even alphabetic word lengths to binary states under a defined segmentation and counting rule.
- Synonym-choice steganography
- A linguistic hidden-information method that maps curated context-appropriate lexical alternatives to symbols such as binary 0 and 1 under a shared codebook and carrier order.
- Punctuation-choice steganography
- A text hidden-information method that maps predefined punctuation alternatives at known carrier positions to symbols such as binary 0 and 1.
- Contraction-choice steganography
- A linguistic hidden-information method that maps curated full forms and contractions at known carrier positions to symbols such as binary 0 and 1 under a shared codebook and normalization rule.
- Active/passive voice steganography
- A linguistic hidden-information method that maps curated active-voice and passive-voice realizations at known carrier positions to symbols such as binary 0 and 1.
- Sentence-order steganography
- A linguistic hidden-information method that maps predefined orderings of the same textual units, such as A→B and B→A, to symbols such as binary 0 and 1.
- Sentence-length parity steganography
- A linguistic hidden-information method that maps odd and even counted lengths of predefined carrier sentences to symbols such as binary 0 and 1 under an explicit segmentation and counting rule.
- Spelling-variant steganography
- A linguistic hidden-information method that maps predefined, context-reviewed orthographic variants to symbols such as binary 0 and 1 under a shared codebook and carrier order.
- Homologous control
- A matched control produced under substantially the same conditions as a questioned artifact or process so the suspected channel or tested factor is the main intended difference.
- Causal intervention
- A deliberate change to the suspected information-carrying variable used to test whether receiver behavior changes as predicted while relevant ordinary content remains controlled.
- Representation differential
- A reproducible difference between two valid representations of the same artifact, such as rendered, parsed, Unicode, accessibility, metadata, or machine-ingestion views.
- Verified channel
- A FugitiveAI confidence label for a channel whose documented extraction rule reproducibly recovers structured information under controlled testing; it does not by itself prove receiver use or malicious intent.
- Transformation profile
- The observed pattern of whether a suspected machine-readable state survives, degrades, or disappears under controlled changes such as normalization, rewriting, reordering, or reserialization.