introduction

Welcome, my name is
lz4

Luau Development / Vulnerability Research / Reverse Engineering

Howdy! My names lav but im known as lz4, fishboy etc. Im an little lua lover! I used to make private script hubs for my own enjoyment. Now I develop anticheats and check them for vulnerabilities! Everything from unsecured remotes and shitty datastores to vulnerabilities no one else could find!

lz4
Quick Info
Name lav / lz4
Location Serbia
Focus Pentesting - Luau Development - Reverse Engineering
Discord lz4decompress
Available for commissions

background

About Me

Currently? I mainly do pentesting, reverse engineering and development of anticheats. But back then I used to do anything you could think of! From exploiting basic local elements of games to getting serversided access by a infected toolbox model!

2026
In Progress

Starting being serious

I began actually taking my talents seriously I fully switched over to pentesting, reverse engineering and general development, worked on a few small projects here and there.

2025
Resolved

Realized exploiting is a waste of my time

Stopped exploiting due to having the sudden realization "Hey, this isnt bringing me any money", selling scripts wasnt profitable anymore and due to Roblox's new anticheat measures I had gotten sick of it and started exploring my options into actual development.

2024
Archived

"Those Were The Days"

During this time I developed small exploits for games like Deepwoken, Robot 64, Forsaken etc. I started quickly learning about exploiting and lua during this time and it make the structure to who i am today.

work

Active Engagements

My past and current work, mostly just small projects but still worth reading to see what I used to do in the past and what im up to right now.

Live Ongoing

Volounteer Work

Currently doing a bunch of free volounteer work based around pentesting and most of the skills im heavily knowledgable on. Trying to expand my palette is what a 30 year old millenial programmer would say, which is true but yet again, I dont really fit into that description.

archive

Private

Exploit Work

Back when I actively used to exploit I would make scripts for people, usually either being free or costing around 5 to 10 bucks. They were very simple scripts that I used to learn off of and improve my general luau knowledge.

Restricted

Solo Testing

I created a hefty amount of anticheats that I would regularly stress test and pentest, due to my higher knowledge on exploiting and not on anticheats I didnt need a secondary figure to do the pentesting for me. As I would get better with pentesting I would naturally get better with making the anticheat almost impenetrable. But hey, thats old stuff. Mostly privated or slowly rotting away in old studio games.

proficiency

Technical Skills

Rated my skills, atleast the ones that are currently useful and that I am improving day to day.

Luau Development 92%
Vulnerability Research & Pentesting 97%
Reverse Engineering 88%
Exploit Mitigation & Anti-cheat Design 80%

get in touch

Talk to me.

Got something you wanna say? Go right ahead, I usually respond but not very quickly.