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z/OS UNIX Tuning: What New USS Practitioners Should Know
This article offers a practical USS tuning primer for new mainframers, developers moving into z/OS UNIX, and technical leaders who need to understand the basics before changing system settings.z/OS UNIX tuning can feel familiar and unfamiliar at the same time. USS...
❓The Unix Legacy Trivia
Like so many transformative innovations, the creation of UNIX was the unintentional outcome of a failed experiment—specifically with a time-sharing operating system called Multics for the GE-645 mainframe. While it was originally developed as a side project with...
From New to Z to SME in Under a Year: Meet Stephen Johnston
Stephen K. Johnson Systems EngineerTrident Services, Inc. Chehalis, Washington, USAThis piece is part of the 2026 Planet Mainframe Influential Mainframers series.For over 20 years, Stephen Johnston’s professional world was defined by the fast-moving landscape of...
Connecting the Mainframe to the Web: Sebastian Dewar’s Vision for Accessible Modernization
Sebastian Dewar CTO, Virtel FranceThis piece is part of the 2026 Planet Mainframe Influential Mainframers series.For Sebastian Dewar, modernization is about access. As CTO of Virtel, Dewar has focused his work on one of the most practical challenges facing the...
NEWS – AI to Mainframe Modernization, Shaping the Future of Enterprise Computing, and more
U.S. Public Sector Applies AI to Mainframe Modernization IBM Announces Strategic Collaboration with Arm to Shape the Future of Enterprise Computing 21CS Establishes Strategic Partnership with Interskill Learning IBM Expands FedRAMP Portfolio with Authorization of 11...
Defining the Standard: Craig Mullins and a Career Shaping Db2 Expertise
Craig Mullins President & Principal Consultant, Mullins Consulting, Inc. Sugar Land, Texas, USAThis piece is part of the 2026 Planet Mainframe Influential Mainframers series.For Craig Mullins, influence is built through consistency. With more than three decades of...
Scaling Modernization from the Inside: Rosalind Radcliffe’s Work to Make Transformation Real
Rosalind Radcliffe IBM Fellow, CTO, Z Ecosystem, IBM Chapel Hill, North Carolina, USAThis piece is part of the 2026 Planet Mainframe Influential Mainframers series.For Rosalind Radcliffe, modernization is not defined by strategy decks or future-state architecture...
Proving Security at Scale: Ángel Gómez Ruiz and the Shift to Continuous Assurance
Ángel Gómez Ruiz CEO, Bsecure Madrid, SpainThis piece is part of the 2026 Planet Mainframe Influential Mainframers series.For Ángel Gómez Ruiz, security is not just about protection. It is about proof. Over the past several years, Gómez Ruiz has focused on one of the...
Latest
Kev Milne Brings Mainframe Pen Testing to Life with open-source Gibson
In the second episode of The Mainframe Book Club, host Andrew (Andy) McCandless talks with Kev Milne, Cyber Threat Intelligence Manager at NatWest Bank, and one of the few professionals focused on mainframe penetration (pen) testing.A Platform Born from Missing Skills...
Simplifying Mainframe Security in 2025, featuring Ravi Patil ▶️
Simplifying Mainframe Security with Broadcom As hybrid IT environments expand, so do the risks. In this video, Broadcom’s mainframe security expert, Ravi Patil, Director of Cybersecurity and Compliance, breaks down how compliance, continuous monitoring, and smarter...
Mainframe Data on the Move: A Security-Centric Perspective, featuring Colin Knight
At the September Virtual Db2 User Group, we hosted Colin Knight, longtime mainframer and Db2 Systems Programming Tech Lead at NatWest. With over 40 years in the field—36 of them working with Db2—Colin cut through the hype to focus on what matters most: security when...
TRIVIA – Cybersecurity Month
For many of us, October is about falling leaves, shorter days, and cooler weather. It also happens to be Cybersecurity month, the time when we dial in on the never-ending (and ever-evolving) task of securing the mainframe. Mainframes have a reputation for being...
The Paradox of Mainframe Security: Most Secure Yet Still Vulnerable
The most secure system in the world is also vulnerable. Mainframes remain the backbone of critical infrastructure—but they are not immune to modern threats. Some still see mainframes as unbreakable fortresses, while others view them as legacy systems lagging in modern...
Future-Proof Your Mainframe: Highlights from Vanguard 2025 and Enhancing Security with ACF2 TM and Top Secret®
At the recent Vanguard Security & Compliance 2025 event (VSC 2025), security leaders came together to address today’s toughest mainframe security challenges, ranging from credential theft to Zero Trust adoption. As a Platinum Sponsor, Broadcom highlighted how...
The Hidden Cybersecurity Battle Inside the Mainframe 🎧
Mainframes remain the backbone of enterprise IT—but as cyber threats evolve, so must the defenses. In this podcast, Ken Chism, Head of Worldwide Cybersecurity Sales at BMC Software, shares an inside look at the changing landscape of mainframe security. Ken discusses...
Mainframe Penetration Testing: Why It Matters More Than Ever
The goal is not disruption but discovery. For decades, mainframes have been at the heart of critical industries such as finance, healthcare, government, and retail. Since IBM introduced the System/360 in 1964, these systems have earned a reputation for being reliable,...
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Upcoming Events
Events
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Virtual CICS User Group: Unlocking Mainframe Knowledge: Using AI to Support CICS Professionals
Zoom - Virtual MeetingMany organizations rely on large CICS applications where critical knowledge is buried in legacy code and documentation. This session explores how AI can help MF CICS professionals quickly understand applications, […]
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Virtual IMS User Group: No Data Left Behind: The Complete Guide to IMS Database Recovery
Zoom - Virtual Meeting📅 June 16, 2026 🕦 11:30 AM ET When an IMS database fails, there is no time to learn recovery on the fly. In this practical and technically grounded session, […]
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Virtual Mainframe Technical Exchange – June 23 – 25, 2026
Virtual MeetingSave the Date! Learn more about the North American and Virtual Mainframe Technical Exchanges here.
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Accelerating Mainframe Efficiency: SysProg & DBA Webinar
FeaturedZoom - Virtual MeetingAre you a systems programmer, database administrator, or mainframe operations or security leader looking to get more out of your z/OS environment? This opening session of the PopUp Mainframe Persona […]
News – AI, Modernization, and Mainframe Momentum: This Week’s Industry News
BMC Expands AI-Powered Mainframe Solutions IBM Introduces IBM Bob Premium Package for Z Kyndryl to modernize systems for North Carolina DMV AI Helped a Company Transition Off the Mainframe - and the Project Won an Award Kyndryl named a Leader in 2026 ISG Provider...
❓Linux: Tux in the Data Center
Our quiz today focuses on Linux, which Linus Torvalds originally created in the early 90s for x86 desktop hardware—about as far from a mainframe as you can get. But its life on mainframes has proved remarkably powerful. Through the mid-to-late 90s, Linux gradually...
NEWS – AI to Mainframe Modernization, Shaping the Future of Enterprise Computing, and more
U.S. Public Sector Applies AI to Mainframe Modernization IBM Announces Strategic Collaboration with Arm to Shape the Future of Enterprise Computing 21CS Establishes Strategic Partnership with Interskill Learning IBM Expands FedRAMP Portfolio with Authorization of 11...
❓ Influential Mainframer Trivia: Eleanor Kolchin
For the month of April, Planet Mainframe puts the spotlight on influential mainframers, and this week our trivia quiz is all about mainframe trailblazer Eleanor Kolchin. Kolchin built her career at a pivotal moment in computing, when computing machines were...
NEWS – Introducing IBM’s New SQL Tool, Virtel 4.64 now Available, and more
Bringing AI to Mainframe Data: Introducing IBM SQL Data Insights Pro Virtel 4.64 Now Available: Stronger Session Security, Enhanced Japanese Codepage Support, and Key Usability Improvements BMC Advances Trusted AI Orchestration With New Control-M Kyndryl awarded a...
❓Influential Mainframer Trivia: Bob Evans
At Planet Mainframe, April is dedicated to honoring influential mainframers past and present. This week’s quiz dives into the life and times of Bob Evans (1927–2004), who played a central role in shaping modern enterprise computing during his career at IBM. ...



