Top 10 Uncracked Codes and Ciphers


We have all heard about the famous Enigma code and how important it was for the Allied effort during World War II when it was finally broken. It was the same thing with the Ancient Egyptians and the Rosetta stone that allowed researchers to decipher the ancient languages and codes written by mathematicians thousands of years ago. This being said, there are many other famous ciphers, codes, and writing systems that remain unsolved to this day. Over the next few minutes, we will learn what are the ten biggest uncracked codes and ciphers in history.

10D’agapeyeff Cipher

This cipher appeared in the first edition of ‘Codes and Ciphers’, a book written by cartographer Alexander D’agapeyeff in 1939. At the time, it was offered as a challenge cipher for the readers at the end of the book. Unfortunately, none of the readers were able to break the code and neither did Alexander at a later time when prompted to do so, saying that he has since forgotten the key to breaking the encryption. As such, the cipher remains uncracked to this day.