Karthick Siva
Senior Manager - Cyber Security Engineering at nbn® Australia
Melbourne, Victoria, Australia
Summary
👤
Senior🎓
Top SchoolKarthick Siva is a Senior Manager in Cyber Security Engineering with 8 years of hands-on experience blending offensive security, automation and strategic defence at scale. Based in Melbourne, he leads cyber engineering at nbn® Australia, founded security consultancy BlackCastle, and teaches coding and automation at the University of Adelaide, reflecting a rare mix of practitioner, entrepreneur and educator. He thrives on anticipating attacker moves like a chess player and automating defenses, while also enjoying ethical break-and-build exercises to harden systems. Technically grounded with a Master’s in Network Systems and a BTech in IT, he pairs deep network knowledge with practical programming skill. Karthick’s approach emphasizes clear, audience-tailored communication and teaching—making complex security concepts accessible to teams and students alike. Off-duty he channels curiosity into creative mischief: building, optimizing and breaking things to drive better defenses.
8 years of coding experience
Major in, Computer Science, Major in, Computer Science at NSN Matriculation High SchoolAnna University, ChennaiGraduate Certificate in Learning & Teaching ( Higher Education ), Special Education and Teaching, Graduate Certificate in Learning & Teaching ( Higher Education ), Special Education and Teaching at Swinburne University of Technology
Github Skills (8)
bruteforce9
parser8
pentesting7
proxy7
browser7
offensive-security6
security5
fuzzing5
Programming languages (1)
Github contributions (5)
Add3r/UserAgent-Fuzz-lib
Aug 2023 - Jan 2025
User-agent Fuzzing Library. This repository holds data of all the user agents in the `user_agents.json` file, which can be used directly with any tool that can parse json format.
Contributions:3 releases, 2 reviews, 75 PRs in 1 year 4 months
browserbruteforcefuzzingfuzzing-libraryparser
Add3r/Proxy_Bypass
Oct 2023 - Feb 2025
Command-line tool to identify useragents that bypasses proxy restrictions
Contributions:1 review, 20 PRs, 25 pushes in 1 year 3 months
browserbruteforcebypass-scriptfuzzingoffensive-scripts
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