ENGLISH: Atbash (Hebrew: אתבש‎; also transliterated Atbaš) is a monoalphabetic substitution cipher originally used to encrypt the...

ENGLISH: The pigpen cipher (alternately referred to as the masonic cipher, Freemason's cipher, Napoleon cipher, and tic-tac-toe cipher)...

ENGLISH: Leet (or "1337"), also known as eleet or leetspeak, is a system of modified spellings used primarily on the Internet. (So, this...