Rui Miguel Feio

Unix System Services (USS) and Access Control Lists (ACL) using RACF

24th August 2016 Rui Miguel Feio

In z/OS Unix System Services (USS), Access Control Lists (ACLs) are used in conjunction with the normal permission bits, allowing access control for files and directories by individual UIDs and GIDs. These are known as extended Access Control Lists and require RACF class FSSEC to be active. Although controlled by […]

Watch hackers break into the US power grid

22nd August 2016 Rui Miguel Feio

A power company in the Midwest (USA) hired a group of white hat hackers to test its defenses. This 15 minute video shows how much work needs to be done to (properly) secure not only this company, but many other companies around the world from hackers. * A Tech Insider […]

Mainframe, the most secure IT platform in the world?

26th July 2016 Rui Miguel Feio

When I first started working in mainframe back in the 1990s, I was told that the mainframe was the most secure platform in the world and that it was impossible to hack it. For many years I thought this was true. Now in 2016, and after working in IT security […]

How to execute MVS or JES2 commands in Batch

20th July 2016 Rui Miguel Feio

There are times where you may need to execute MVS or JES2 commands in batch using a JCL job. In this article I will show you 3 different ways of doing this. The examples below show the JCL required to execute the MVS command D A,L and the JES2 command […]

How to execute TSO commands in Batch Job

19th July 2016 Rui Miguel Feio

Running TSO commands via batch job can be very useful if you have the need to execute multiple commands or if you want to capture the output of the TSO commands. To execute the TSO commands in batch you can use one of the following Terminal Monitor Programs (TMP): IKJEFT01 […]