I have been hacking Linux since 1994 and programming C/assembly (also some C++ and Go) since then.

Git, make and related build tools, gcc, llvm, performance analyzing and optimizing with assembly/perf/valgrind.


Network/communications/operational security, (secure) programming and testing, cryptography, cryptocurrencies, Linux systems administration, VPS services.

I follow trends in security and vulnerabilities in software/hardware/people.

Coding projects

I do freelance coding projects, code reviews. Use contact methods listed below.