I wonder if this trap street message, which was inserted in some code initializing a DES chip, was chosen because it was rumored that NSA had backdoored DES. The article doesn't mention it, but it would be quite a coincidental choice!
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The article is a little confusing but it looks like an email reply to multiple questions, the first one "Why this message" and the second one "Why the empty chip slot". (And the third one about a Sun-2 emulator, which also comes out of nowhere.)