Billy Ellis
London, England, United Kingdom
Summary
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RockstarBilly Ellis is an iOS security researcher based in London with a decade of experience in exploit development, kernel vulnerability research, and ARM reverse engineering. He has worked across startups and security firms, currently at ZygoSec, and previously at Dataflow Security and Teller, blending hands-on research with practical engineering. Billy is the author of the widely-read "Beginner's Guide to Exploitation on ARM," sold in 65 countries, and runs an educational YouTube channel that demystifies low-level iOS security topics. His background in producing books, videos, and blog posts shows a strong emphasis on teaching and community building in a niche technical field. Colleagues describe him as a practitioner who moves seamlessly between producing public-facing educational content and developing real-world exploit tooling.
11 years of coding experience
Github Skills (21)
exploit9
arm8
framebuffer8
ios5
kernel3
in-progress3
jailbreak2
finder2
imageio2
neural-network2
bit2
cpp2
file-explorer2
binaries1
gadget1
Programming languages (5)
Github contributions (5)
Billy-Ellis/framebuffer_write
Jan 2020 - Jun 2020
A tool to write text to the iOS screen by directly modifying the pixel information in the framebuffer
Contributions:5 commits, 4 pushes, 1 branch in 5 months
framebufferios
Billy-Ellis/baby-cpu
Jan 2018 - Feb 2019
Contributions:2 pushes, 1 branch in 1 year 1 month
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