Clifford Sekel
Security Architect at PureDarwin
Carlisle, Pennsylvania, United States
Summary
🤩
Rockstar🎓
Top SchoolClifford Sekel is a Security Architect with a decade of hands-on experience designing and hardening enterprise and DoD networks, currently leading security architecture at GCyber from Carlisle, PA. He combines deep SIEM and sensor expertise with Unix systems engineering, having progressed from frontline customer support and incident analysis to senior ISSE and architecture roles. Clifford has a practical bent—building and configuring sensors, applying STIG baselines, and integrating tooling like Sourcefire and ArcSight—paired with a formal BS in Cybersecurity and Information Assurance. He also maintains long-running open-source/system projects through PureDarwin, reflecting sustained community engagement beyond his day job. Notably, his career shows a consistent thread of turning tactical operational experience into repeatable, auditable security controls for high-stakes environments.
10 years of coding experience
4 years of employment as a software developer
Bachelor of Science - BS, Cybersecurity and Information Assurance, Bachelor of Science - BS, Cybersecurity and Information Assurance at Western Governors University
Github Skills (31)
xpc10
compilation10
vmdk10
css10
darwin10
operating-system10
xnu9
macos9
html9
mach8
plist7
kernel6
bug-reporting6
windows6
launchd6
Programming languages (6)
Github contributions (5)
PureDarwin/darwin-xnu
Jul 2020 - Sep 2020
The Darwin Kernel (mirror)
Contributions:7 commits, 2 PRs, 1 push in 2 months
kernellinuxdarwin
PureDarwin/PD-17.4-Beta
Jul 2018 - May 2021
Beta vmdk for the community
Contributions:1 review, 22 commits, 4 PRs in 2 years 11 months
vmdk
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