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Slim(toolkit): Don't change anything in your container image and minify it by up to 30x (and for compiled languages even more) making it secure too! (free and open source)

Prowler is the world’s most widely used open-source cloud security platform that automates security and compliance across any cloud environment.

The Practical Linux Hardening Guide provides a high-level overview of hardening GNU/Linux systems. It is not an official standard or handbook but it touches and uses industry standards.

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.

js is a template which aims to provide as much privacy and enhanced security as possible, and to reduce tracking and fingerprinting as much as possible - while minimizing any loss of functionality and breakage (but it will happen).

This guide is a collection of techniques for improving the security and privacy of macOS on Apple silicon Macs. It targets experienced users who want security practices commonly used by organizations, but is also suitable for novice users with an interest in privacy and security.

🛡️ Open-source and cloud-native Web Application Firewall (WAF)

An evolving how-to guide for securing a Linux server that, hopefully, also teaches you a little about security and why it matters.

This guide demonstrates how to store credentials on a YubiKey. The private keys cannot be copied back out of the device; a separate offline "Certify" key is retained only to replace or renew them.