A lack of US cryptanalytic security before Midway?

[John Levine]

>The conventional wisdom is that the successful US cryptanalytic efforts
>against Japanese naval codes was a closely-held secret.

Has the conventional wisdom forgotten that it was reported in the
Chicago Tribune in 1942?

See, for example, http://www.newseum.org/warstories/essay/secrecy.htm

Fortunately, the Navy Department had enough sense not to make a public
stink, and the Japanese evidently didn't read the Chicago paper.

R's,
John

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