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by aus_ 3962 days ago
You can blame IBM for that. The fact that they haven't made it easy for security researchers (or anyone really) to tinker hurts the platform.

Up until a few years ago, there was no legal way to run z/OS on hardware that wasn't a million dollar hunk of iron from IBM. IBM has since made a product called Rational Developer and Test Suite [0] available. With it, you get an emulator and a licensed copy of z/OS that you can run on x86. Except it's $9,500 / year.

The only saving grace is an open source project called Hercules [1] which emulates the z/Architecture. If you don't mind breaking some copyright laws, there is no technical reason why you can't download a copy of z/OS and run it under Hercules. But good luck finding the latest version. Want to test your research against the latest maintenance levels? Good luck.

[0]: http://www-03.ibm.com/software/products/en/ratideveandtesten...

[1]: http://www.hercules-390.eu/

[2]: http://mainframed767.tumblr.com/post/40836059586/instruction...