Thomas Dullien, also known under the pseudonym Halvar Flake, has been in and around the low-level computer security field since the late 1990s. He has published highly-cited papers on technical matters both practical and theoretical, pioneered at least two practices that are now industry-standard (BinDiff’ing and eBPF-based multi-runtime profiling), and given many many talks, among them a keynote at CyCon 2018 that Rob Joyce deemed a must-watch. He also founded two companies (one security-focused, acquired by Google in 2011 in response to Chinese government attacks, and another one, efficiency-focused, acquired by Elastic in 2021) and was involved in Angel investing.

Gentleman Hackers: Mikko Hypponen - Chief Research Officer, WithSecure Tomi Tuominen - Chief Security Officer, Wolt

https://www.youtube.com/watch?v=qllU_B_Rmis