On Fri, 21 Jun 2013 09:00:36 -0500, Roland Kinsman wrote: >I wonder if having EBCDIC instead of ASCII helped make IBM >mainframe OS less penetrable to hackers.
The character encoding that is used is irrelevant. The thing that makes an operating system less penetrable is a design that is based upon system integrity. From the earliest design of the System/360, there have always been two kinds of instructions: privileged and non-privileged. Storage protection further enhances the ability for an operating system to protect itself. When MVS was first released in 1973, IBM issued a statement of integrity that has been maintained ever since. You can find some information about it at http://www-03.ibm.com/systems/z/os/zos/features/racf/zos_integrity_statement.html -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
