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Developer posts secret key on GitHub, loses $40K in 2 minutes
(cointelegraph.com)
This is a most excellent place for technology news and articles.
I use a text file version of a novel to back up my keys, then I store the key map in multiple cloud drives. For example, if the word is "lighting" then my key map for that word would be 487,5 (line 487, word 5). Easy to crack, if you know what novel I am using.
That's the copy protection on dozens of computer games from the 90s.
To get my codes you have to play Alone in the Dark 2, and have the original 2 sided playing cards, then translate that into Brittanic runes and find the latitude and longitude of the given city on a cloth map from the original Ulitma.
Well, I am a Gen-X'r.
Chuck Yeager's air combat!
It's also even older in use in communicating secretly, known as a Book Cipher. You and your recipient get the same copy of a book and agree to one of a few numbering schemes, the plaintext message becomes numbers that correspond with words in the book.