TheProtector
lastmod 2025-08-28created 2025-08-283 edits
Linux Bash Script for the Paranoid Admin on a Budget - real-time monitoring and active threat response
Linux Bash-based security monitoring script
About
- A Linux-only host-based security monitoring tool built by a developer frustrated with the high cost (around $50,000 per year) and Windows-centric design of enterprise security tools
- Monitors malware, rootkits, and concealment attempts in real time through multi-layer detection spanning user space and kernel space
- Runs as a single Bash script with almost no dependencies, so it is simple to install and most Linux administrators can read and modify it themselves
- Designed to be usable even in low-cost environments (the developer built it on a $500 laptop)
Key features
- Real-time monitoring: process, network, and file monitoring
- eBPF-based kernel event tracing: real-time process execution tracing and system call analysis
- YARA rule-based malware (web shell, reverse shell, cryptocurrency miner) detection
- Anomalous behavior detection and blocking (IP blocking, process termination, file quarantine)
- Detection of concealment techniques used by rootkits and advanced threats
- Attack detection with a network honeypot (listening on ports to lure attackers)
- Automatic threat intelligence updates (including IP reputation lookup)
- Forensic logging and integrity verification
- Based on a single Bash script (no complex installation needed)
- Provides a web dashboard and REST API
- Optimized for container environments such as Docker
System requirements
- Linux Kernel 4.9+ (eBPF required)
- Bash 4.0+