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Awesome List
A collection of awesome security hardening guides, tools and other resources
GitHub stars and default-branch commits for decalage2/awesome-security-hardening.
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An evolving how-to guide for securing a Linux server.
This guide details creating a secure Linux production system. OpenSCAP (C2S/CIS, STIG).
List of open source tools for AWS security: defensive, offensive, auditing, DFIR, etc.
Fast and powerful SSL/TLS scanning library.
Platform Security Assessment Framework
lightweight, dependency-free bash script for security, performance auditing and infrastructure monitoring of Linux servers.
Hardentools simply reduces the attack surface on Microsoft Windows computers by disabling low-hanging fruit risky features.
PCI-DSS compliant Debian 12/13 hardening
CryptoLyzer is a fast, flexible and comprehensive server cryptographic protocol (TLS, SSL, SSH, DNSSEC) and related setting (HTTP headers, DNS records) analyzer and fingerprint (JA3, HASSH tag) generator with Python API and CLI. (read-only clone of the original GitLab project)