This reminded me of Matt Blaze's work on physical lock security back in 2003. He found a method of deriving the "master key" for a building (one key that opens all locks) from a single example: https://www.mattblaze.org/masterkey.html
When he published about this he was bombarded with messages from locksmiths complaining that they all knew about this and kept it secret for a reason! https://www.mattblaze.org/papers/kiss.html
It was a fascinating clash between computer security principles - disclose vulnerabilities - and physical locksmith culture, which was all about trade secrets.
When he published about this he was bombarded with messages from locksmiths complaining that they all knew about this and kept it secret for a reason! https://www.mattblaze.org/papers/kiss.html
It was a fascinating clash between computer security principles - disclose vulnerabilities - and physical locksmith culture, which was all about trade secrets.