Lynis - Security auditing tool for Linux, macOS, and UNIX-based systems. Assists with compliance testing (HIPAA/ISO27001/PCI DSS) and system hardening. Agentless, and installation optional.

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

Wazuh - The Open Source Security Platform. Unified XDR and SIEM protection for endpoints and cloud workloads.

immudb - immutable database based on zero trust, SQL/Key-Value/Document model, tamperproof, data change history

OSSEC is an Open Source Host-based Intrusion Detection System that performs log analysis, file integrity checking, policy monitoring, rootkit detection, real-time alerting and active response.

Security automation content in SCAP, Bash, Ansible, and other formats

LunaSec - Dependency Security Scanner that automatically notifies you about vulnerabilities like Log4Shell or node-ipc in your Pull Requests and Builds. Protect yourself in 30 seconds with the LunaTrace GitHub App: https://github.com/marketplace/lunatrace-by-lunasec/

PCI-DSS compliant Debian 10/11/12 hardening

Wazuh - Docker containers

Wazuh - Ruleset

Plugins for Wazuh Dashboard

VULNRΞPO - Free vulnerability report generator and repository, end-to-end encrypted! Templates of issues, CWE, CVE, MITRE ATT&CK, PCI DSS, issues import Nmap/Nessus/Burp/OpenVAS/Bugcrowd/Trivy, Jira export, TXT/JSON/MARKDOWN/HTML/PDF report, attachments, automatic changelog, statistics, vulnerability management, bug bounty, methodologies and more!!

CISO Assistant is an open-source one-stop-shop for GRC - Risk and Audit Management supporting +30 standards and frameworks: NIST CSF, ISO 27001, SOC2, CIS, PCI DSS, NIS2, CMMC, PSPF, GDPR, HIPAA, Essential Eight, NYDFS-500, DORA, NIST AI RMF, 800-53, 800-171, CyFun, CJIS, AirCyber and so much more

Run individual controls or full compliance benchmarks for CIS, PCI, NIST, HIPAA and more across all of your AWS accounts using Powerpipe and Steampipe.

Security compliance platform - SOC2, CMMC, ASVS, ISO27001, HIPAA, NIST CSF, NIST 800-53, CSC CIS 18, PCI DSS, SSF tracking. https://gapps.darkbanner.com

A scanner for end-of-life (EOL) software and dependencies in container images, filesystems, and SBOMs

Wazuh - Ansible playbook

Wazuh - Project documentation

SIAC is an enterprise SIEM built on open-source technology.

MCW Modern cloud apps