Easter Egg in "Writing Secure Code 2nd Ed."

Mmm,

seems Michael Howard put an easter egg in the second edition of his famous book Writing Secure Code.

I must say, I never found something resembling an egg of this kind. Looking at the comments, other people also have a hard time finding it. Michael mentions one person was able to find it. Unfortunately this person remains unknown... try to skim through the book another time this weekend to see if I can find it, and receive eternal fame :)