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I agree. However, I believe that there are some within IBM and also at customer mainframe shops who like it this way because they believe there's an additional

• js8 4y ago
  > However, I believe that there are some within IBM and also at customer mainframe shops who like it this way because they believe there's an additional layer of security through obscurity. This mindset is changing in the recent years. There is more information how to hack z/OS than ever, and IBM is trying to fix the weaknesses (for example, discourage custom authorized code, scan existing customer and vendor applications for vulnerabilities, etc.). So they are realizing that obscurity is too little protection for a determined attacker.