โ Scribed by Norman Crocker
No coin nor oath required. For personal study only.
Whilst a large proportion of the IT buslness Is busy dlscusslng Client/Server and Downsizlng, the majority of the worlds large businesses continue to process their every day high-value corporate computing on a mainframe. IBM's flagship 'MVS' operating system is used extensively In this arena. This system is, architecturally speaking, an old system, predating the 80s and 90s concerns for Information security. In order to relieve concerns regardlng the ability to trust MVS a "Statement of Integrity" for the system was issued by IBM in 1981. While providing a business with guarantees, this statement clearly puts the onus for managing the integrity of a given MVS Implementation firmly In the hands of the site management. This article introduces the basic concepts on which MVS Integrity Is built, explains the dependence of all MVS access control software packages on MVS integrity and discusses some of the most important areas to manage.
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