Which technique hides data by making small invisible changes to characters or fonts?

• A. Font Code (Steganography)
• B. Offset
• C. Encryption
• D. Dictionary Attack

Answer: (A)

Hiding information inside another medium while keeping its existence hidden is steganography. In text, a common approach is font-based steganography, sometimes described as Font Code. Tiny, invisible changes to characters or font rendering are used to encode bits without altering readability. For example, subtle differences in glyph shapes, the use of zero-width characters, or font rendering variations can carry data that only a reader with the right decoding method can extract. This makes the message appear as ordinary text to casual observers, while still conveying a secret payload to the intended recipient.

Encryption, by contrast, transforms the content so it’s unreadable without a key but does not hide that a message is being sent. The concept of an offset isn’t a standard way to conceal information in text, and a dictionary attack is a method for guessing passwords rather than hiding data.