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About Us

Phylum's mission is to secure the software supply chain. With a team of career security researchers and developers with decades of experience in U.S. Intelligence community and commercial sectors, we leverage an offensive-security mindset that enables the best defensive products for our customers.


Our Founding Team

Aaron Resize

Aaron Bray


  • 14 years of experience working in software engineering and information security
  • Offensive and defensive cybersecurity expert
  • 11 years in the U.S. Intelligence Community
  • Led development at Sony for the Global Threat Emulation cell
  • Research: program synthesis, malware diversity, software anomaly detection, application of natural language processing techniques to binary analysis

Louis Resize

Louis Lang

Chief Technology Officer

  • 6 years with the National Security Agency developing software for network defense, tools for offensive counter cyber intelligence
  • Performed research with several national laboratories and completed projects on network defense analytics, cryptography, and machine learning
  • Developed the red team toolkit for Sony
  • Reported security issues to AT&T, Y Combinator, Apple, and United Airlines

Pete Resize

Peter Morgan


  • Security researcher for 20 years focused on product and application security, hardware and software reverse engineering, and software development
  • Successfully led security teams at Matasano Security, Accuvant/Optiv R+D, and Clever Security
  • Found and helped fix critical issues in pacemaker and implantable cardio defibrillators for two of the top medical device manufacturers

Our Investors

Our Advisors

Jeff Hudesman

Jeff Hudesman

CISO at Pinwheel

Holds CISSP, CEH, and CISA certifications, and previously held global leadership positions at DailyPay, Sony, PR Newswire and Deloitte.





Jon Miller

Jon Miller

CEO & Co-Founder of Halcyon

Seasoned security product executive with over 20 years of experience in information security. Held previous leadership roles at Accuvant/Optiv and Cylance. 



Kevin Bloch

Kevin Bloch

Former CTO for Cisco, Australia & NZ

Held previous leadership roles at Lucent (now Nokia), JNA Telecommunications, and OTC (now Telstra).





Ryan Smith

Ryan Smith

CTO & Co-Founder at Halcyon

Held previous roles for consulting, product, and Fortune 50 organizations, discovering and exploiting highly impactful vulnerabilities in widely deployed client and server software.

Tyler Shields

Tyler Shields

CMO at JupiterOne

Former Forrester analyst who helped build and advise high growth software companies including CA Technologies, Veracode, Signal Sciences, and Sonatype.