Open web transmission

I'm lazarusfree. I build small security and backend projects and write up the fixes.

This is the front page for my repos: AES in Python, a local SSRF lab, and a Spring Boot ATM app. The write-ups live next to the code.

Python Java Rust C / C++ Security Web

Browse projects GitHub profile

Current focus

What I'm working on

AES modes in Python, SSRF defenses with regression tests, and a Spring Boot app with authentication and persistence.

Quick launch

AES Implementation Python implementation with benchmarking and write-up SSRF Lab Safe local reproduction plus a hardened secure version ATM Simulation Spring Boot application using Java 21 and MySQL

Site notes

Plain HTML, CSS, and JavaScript with no framework or build step. To publish something new I edit a file and upload it.

What I care about

I want the code to run and the explanation to be honest. Notes live next to the code so someone else can learn from the mistakes and the fixes.

Outposts

GitHub / lazarusfree Discord Instagram TikTok X / junatthemoon