the.com/steganography
hiding a message so well nobody knows there's a message to find.
means the practice of concealing information inside other, ordinary-looking information so its very existence stays secret.
from from greek steganos meaning covered or roofed, and graphein meaning writing — literally covered writing, first named by trithemius in a 1499 book that pretended to be about magic.
vs cryptographyencryption hides meaning, this hides the message itself
ancient methodtattooed messages on shaved scalps, waited for hair
modern usedata hidden in pixel bits of ordinary images
wwii trickmicrodots shrank pages to the size of a period