linux-security

This guide details creating a secure Linux production system. OpenSCAP (C2S/CIS, STIG).

Elkeid is an open source solution that can meet the security requirements of various workloads such as hosts, containers and K8s, and serverless. It is derived from ByteDance's internal best practices.

linuxprivchecker.py -- a Linux Privilege Escalation Check Script

Multi-engine Linux malware scanner with five detection stages (MD5, HEX pattern, YARA, ClamAV, statistical), real-time inotify monitoring, quarantine, and multi-channel alerting

AVML - Acquire Volatile Memory for Linux

Tracking CVEs for the linux Kernel

Endpoint detection for Windows, Linux, and macOS. Sigma, YARA, and IOC rules on native telemetry. Written in Rust. No cloud account required.

A desktop application that checks security-related settings and makes recommendations for improvements without requiring central device management or automated reporting.

OpenSnitch is a GNU/Linux application firewall

A modern, Rust-powered Linux scanner that unmasks hidden rootkits, stealthy eBPF tricks, and ghost processes in one fast sweep (50+ scanners)

Linux Security & Linux Hardening & Linux Management & Linux Configuration

Bash script to create nftables sets of country specific IP address ranges for use with firewall rulesets. The project provides a simple and flexible way to implement geolocation filtering with nftables. It can be a useful tool to reduce the chance of malware, ransomware and phishing attempts as well as mitigating the effects of DDoS attacks.

iptables/netfilter firewall for Linux servers with stateful filtering, trust system, ipset block lists, SYN flood protection, VNET per-IP policies, and Docker support

This script automates the scanning process using the OpenSCAP Security Guid to hardening Ubuntu systems, aligning with DISA-STIG compliance for Ubuntu 24.04. LTS minimum. It includes a range of security enhancements and configurations designed to strengthen the security posture of Ubuntu servers.

See adversary, do adversary: Simple execution of commands for defensive tuning/research (now with more ELF on the shelf)

Linux security with three different distributions (Rocky Linux, Ubuntu and openSUSE)!

A lightweight command sandbox for Linux, secure-by-default, built on Landlock.

A lightweight, multi-layer Linux sandbox combining namespaces, pivot_root, seccomp-bpf, capability dropping, and an evidence-based verdict engine (Truthimatics Public Version) for secure, auditable code execution.

Minimal no-libc Linux x86_64 ELF PoC build for Copy Fail (CVE-2026-31431)

Zero-overhead eBPF process tracer for Linux malware triage and incident response. Traces syscalls, network, and file events per-process without strace overhead.