HIDING IN PLAIN SIGHT A QUICK INTRO TO

Read the hidden messsage: Wh. En in the course of human events, it becomes

Welcome To IMSA! Of course, most messages won’t be so easy to spot—that’s the

Find the hidden message: We believe each person learning the language of science can

Well spotted! We believe each person learning the language of science can participate in

History Herodotus mentions two methods: Under a wax tablet Tattoo on scalp Johanes Trimethius

History Riverbank Laboratories, Shakespeare, and Bacon Microdots in WWII Atlas and map makers Digital

Some local color Col. George Fabyan founded Riverbank Laboratories Interest in codes and ciphers

Bacon’s biliteral cipher A = aaaaa H = aabbb O = abbba V =

Message hidden using Bacon To be, or not to be—that is the question. Whether

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HIDING IN PLAIN SIGHT A QUICK INTRO TO STEGANOGRAPHY Micah Fogel

Read the hidden messsage: Wh. En in the course of human events, it becomes necessary for one peop. Le to dissolve the politi. Cal bands which have c. Onnected the. M with anoth. Er, and TO assume among the powers of the earth, the separate and equal stat. Ion to which the laws of nature and of nature's god entitle the. M, a decent re. Spect to the opinions of m. Ankind require. . .

Welcome To IMSA! Of course, most messages won’t be so easy to spot—that’s the goal! Steganos is Greek for “hidden” or “covered” Similar to cryptography (from kruptos “secret”) The difference is that steganography seeks to hide even the existence of a message from those other than the intended recipient Both could be used together

Find the hidden message: We believe each person learning the language of science can participate in or, at the least, think about essential societal decisions.

Well spotted! We believe each person learning the language of science can participate in or, at the least, think about essential societal decisions.

Can you see this message?

Compare to the original

Hear the hidden message?

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Can you see the hidden image?

Compare to the original

History Herodotus mentions two methods: Under a wax tablet Tattoo on scalp Johanes Trimethius invented the “ave maria cipher” A modern variation is “Spam. Mimic” Invisible inks

History Riverbank Laboratories, Shakespeare, and Bacon Microdots in WWII Atlas and map makers Digital watermarks

Some local color Col. George Fabyan founded Riverbank Laboratories Interest in codes and ciphers Elizabeth Wells Gallup Bacon’s biliteral cipher Elizabeth and William Friedman

Bacon’s biliteral cipher A = aaaaa H = aabbb O = abbba V = babab B = aaaab I = abaaa P = abbbb W = babba C = aaaba J = abaab Q = baaaa X = babbb D = aaabb K = ababa R = baaab Y = bbaaa E = aabaa L = ababb S = baaba Z = bbaab F = aabab M = abbaa T = baabb G = aabba N = abbab U = babaa

Message hidden using Bacon To be, or not to be—that is the question. Whether ‘tis nobler in the mind…