Fiftieth Anniversary of the IBM Mainframe

Just a quick note that IBM is celebrating 50 years of mainframe computing.  So we have gone from mainframe and dumb terminals, to minicomputers and smarter terminals, to personal computers to client/server, and finally to “cloud services.”  In an interesting way that sort of gets us back to the beginning, where everything we want is located on the biggest “mainframe” of them all – the Internet.  But instead of dumb terminals we have smart everything, ubiquitous high-speed connectivity, and the endless server farms that contain the limitless collections of information and services.  Truly an amazing ride in an unbelievably short period of time.


About the Author:

I am a cybersecurity and IT instructor, cybersecurity analyst, pen-tester, trainer, and speaker. I am an owner of the WyzCo Group Inc. In addition to consulting on security products and services, I also conduct security audits, compliance audits, vulnerability assessments and penetration tests. I also teach Cybersecurity Awareness Training classes. I work as an information technology and cybersecurity instructor for several training and certification organizations. I have worked in corporate, military, government, and workforce development training environments I am a frequent speaker at professional conferences such as the Minnesota Bloggers Conference, Secure360 Security Conference in 2016, 2017, 2018, 2019, the (ISC)2 World Congress 2016, and the ISSA International Conference 2017, and many local community organizations, including Chambers of Commerce, SCORE, and several school districts. I have been blogging on cybersecurity since 2006 at

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