Skip to content
View jeffersoncesarantunes's full-sized avatar
1 follower · 15 following
  • Brazil

Block or report jeffersoncesarantunes

Block user

Prevent this user from interacting with your repositories and sending you notifications. Learn more about blocking users.

You must be logged in to block users.

Maximum 250 characters. Please don’t include any personal information such as legal names or email addresses. Markdown is supported. This note will only be visible to you.
Report abuse

Contact GitHub support about this user’s behavior. Learn more about reporting abuse.

Report abuse
jeffersoncesarantunes/README.md

🐡 System Security Researcher | Low-Level & Kernel-Focused Developer 🐧

Auditing kernels and inspecting memory — one syscall at a time.
Mostly learning by breaking things and figuring out why.

📔 About Me

I'm a self-taught developer focused on system security and low-level behavior.

I didn't come from a formal background — most of what I know came from reading docs, breaking things in VMs, and trying to understand what the system was actually doing under the hood.

I work close to the system boundary — where abstractions stop helping and you have to deal with memory layout, process behavior, and real execution flow.

Instead of big frameworks, I prefer small, transparent tools written in C and Bash. Tools I can inspect fully and trust because I can see exactly what they do.

Projects like K-Scanner, LinSpec, S.I.R.E.N, and OpenSec come from that mindset — simple systems to observe, validate, and question how things behave in practice.

A few ideas guide most of what I do:

  • Push systems until edge cases surface
  • Keep things minimal and inspectable
  • Focus on real behavior, not assumptions

Security isn't about running tools. It's about understanding what the machine is actually doing when things start to break.

📂 Projects

Project Description Stack
LinDash Web dashboard for LinSpec scan reports with REST API and SQLite storage. Python
SYSCAGE Behavioral syscall profiler and seccomp policy generator for Linux process confinement. C
SYNTROPY Unified forensic triage suite (LinSpec + K-Scanner + S.I.R.E.N). C, Bash
LinSpec Kernel hardening audit tool focused on identifying real security gaps. C
K-Scanner RWX memory detection and live process analysis for Linux. C
S.I.R.E.N Audit-aware memory acquisition and forensic triage tool. Bash
K-Verify Purple Team adversarial validation and detection gap analysis for the SYNTROPY ecosystem. C
PMV OpenBSD mitigation auditor (W^X, ASLR, pledge, unveil). C

🛠️ Stack & Environment

Languages: C11, Bash, Python
Systems: OpenBSD, Arch Linux
Editor: Neovim (AstroNvim)

📫 Contact

📖 References

🤝 Contributing

Contributions welcome — especially if you care about simplicity and low-level correctness. Open an issue or pull request if you have ideas or improvements.

Popular repositories Loading

  1. SYSCAGE SYSCAGE Public

    🐧 Behavioral syscall profiler and seccomp policy generator for Linux process confinement

    C 1

  2. PMV PMV Public

    🐡 OpenBSD security auditor: validating Pledge, Unveil and W^X mitigations.

    C

  3. K-Scanner K-Scanner Public

    🐧 Live Linux forensics: detecting RWX anomalies and fileless malware.

    C

  4. S.I.R.E.N S.I.R.E.N Public

    🐧 Live Linux forensics: real-time RAM streaming, integrity hashing and safety-aware memory acquisition.

    Shell

  5. jeffersoncesarantunes jeffersoncesarantunes Public

    🐡🐧Security ResearcheSecurity Researcher & System Security Developer: Focus on Kernel, Memory Forensics and Unix-like Systems.

  6. LinSpec LinSpec Public

    🐧Lightweight forensic kernel hardening audit tool for Linux security baseline verification.

    C