Usually when a piece of tech is protected purely by obscurity in this way, the tech isn't really tech. It is more likely something that a decent programmer/hack

Usually when a piece of tech is protected purely by obscurity in this way, the tech isn't really tech. It is more likely something that a decent programmer/hacker could figure out in a day or two. That's why they are scared to share any info - because even just a single sentence could be enough of a hint to a competitor in how it works.