This page will contain any mistakes that are found in the book, after it is sent to the printer.
p. 119 (and others): LOL! First big one: Our book was released on December 10, 2020, but on December 11, 2020, one of the world’s most famous unsolved codes was, well, solved! The Zodiac Killer cipher called “Z340” was cracked. For more information, check here.
p. 15/16: In the appreciation list Jew-Lee Lann-Briere is classified under B instead of L
From Olaf Ostwald:
On page 412 in the fifth line of “Codebreaking – A Practical Guide” it is stated that “The M4 project succeeded in breaking two of the messages in 2006, and the third one was solved two years later.” However, the third one was broken in 2013, thus seven years later.
From Marc Baldwin:
p42: The pigpen diagram is not identical to that on p32, as the Y and Z have been transposed
p43: lines 6 & 7: ‘thut’ should also be ruled out as not making sense
line 13: (‘oUt’) should, I think, read (‘oMt’)
line 14: (‘aetheR’) should, I think, read (‘aetheV’)
pp67 & 68: If all the two-digit numbers are between 01 and 65, how is
the lower-case ‘w’ in, for example, ‘own’ in line 5 of the plain text enciphered,
as the substitution table on p68 gives cipher 66 for plain text ‘w’?
p135: last two lines – for ‘2350’ read ‘2250’ (adding 1016 to 1234)
p282: explanatory letters omitted from right-hand side of the third diagram
p384: line 21: for ‘A YISIL’ read ‘A YISL’
From Richard Bean:
Actually the fact of the CIA (partial) solution, but not the plaintext, was made public on November 16, 1998 in the Atlanta Journal-Constitution, page A2
Chapter 3, page 38, the Plain English frequencies, instead of 12.75%, 10.25%, 9.25% and 8.25%, should be 12.7%, 9.1%, 8.2%, and 7.5%.
Chapter 8, page 175, first paragraph: “common trigraphs BLA and CHA” should be, “common trigraphs BLA and HOR”
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