
Philip Young
Philip Young joined NetSPI in 2023 as the Director of Mainframe Penetration Testing to help enterprises better understand their mainframe cybersecurity threat landscape. Prior to joining NetSPI, Philip spent the past 15 years building mainframe penetration testing programs at Fortune 500 companies such as Visa Inc. and Wells Fargo Inc, covering z/OS, z/TPF, RACF, TSO, VTAM, CICS, TopSecret, Web apps and cloud. He has numerous certificates including but not limited to Security+, CISSP and OSCP. Philip has presented on mainframe cybersecurity around the globe at conferences such as BlackHat, SEC-T, GSE, RSA, Hactivity, DEFCON, and SHARE. He also co-created and taught the world’s only mainframe penetration testing class. He has contributed to multiple opensource tools such as Nmap and Metasploit to add support for z/OS, and has developed many opensource mainframe penetration testing tools such as CATMAP, APFCHECK, OMVSEnum, NJELib, XMILib and TN3270lib for Nmap, as well as brute force tools for TSO and CICS.
More By Philip Young

Mainframe Penetration Testing
NetSPI Wins First Place at SHARE Mainframe Capture the Flag Event
March 12, 2025
Learn how NetSPI's Mainframe Pentesting team claimed first place at SHARE's inaugural Capture the Flag event, showcasing elite z/OS security expertise.
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Mainframe Penetration Testing
Mapping Mainframe Memory Made Easy
September 16, 2024
Explore how NetSPI's own LPAR enhances pentesting efficiency through rapid tool prototyping and deployment.
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Mainframe Penetration Testing
Enumerating Users on z/OS with LISTUSER
October 12, 2023
Enhance mainframe security by learning about the risks of allowing all users the ability to run the LISTUSER command against any user.
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