Trent Hein
Co-CEO at Rule4
Boulder, Colorado, United States
Summary
👤
Senior🎓
Top SchoolTrent Hein is a veteran cybersecurity and systems leader with 36 years of experience, currently serving as Co-CEO of Rule4 after co-founding and leading AppliedTrust for 16 years. He co-authored the best-selling Unix System Administration Handbook—translated into more than 16 languages and widely regarded as the "bible" of Unix/Linux administration—and has earned a USENIX Lifetime Achievement Award for work dating back to Berkeley's CSRG. Trent combines deep technical credentials (CCIE, CISSP, ISSMP, ISSAP, and others) with executive experience building security and infrastructure businesses. He was an early engineer at BSDI, led technology at XOR, and helped shape operational security practices used by enterprises today. Based in Boulder, he also invests in community tech leadership—founding DevOps Boulder and serving on nonprofit boards—bringing a rare blend of practical systems craftsmanship, security rigor, and sustained entrepreneurial success. An ex-PhD researcher with a BS in Computer Science, he quietly bridges academic depth and product-focused execution.
36 years of coding experience
27 years of employment as a software developer
ex-PhD Computer Science, ex-PhD Computer Science at University of Colorado Boulder
Github Skills (9)
history10
version-control10
unix10
nim-language10
evolution10
freebsd10
philosophy10
linux9
shell9
Programming languages (1)
Github contributions (3)
migueldeicaza/unix-history-repo
Jun 1990 - Jul 1991
Contributions:313 commits in 1 year 2 months
unixuntillinuxcontinuouscommit
KvaroverHeaven/unix-history-repo
Jun 1990 - Jul 1991
Continuous Unix commit history from 1970 until today
Contributions:123 commits in 1 year 2 months
unixuntillinuxcontinuouscommit
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