The Practical Linux Hardening Guide
The Practical Linux Hardening Guide provides a high-level overview of hardening GNU/Linux systems, touching and using industry standards such as CIS, STIG, NIST, PCI-DSS, SCAP, and more. It offers practical step-by-step instructions for building hardened systems and services, aiming to cover internal and external threats in a useful and simple manner.
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A newsletter providing summarized cyber defense technical content for blue and purple teams to stay informed and protect their estates.
A comprehensive guide for using Docker with detailed information on prerequisites, installation, containers, images, networks, and more.
A non-commercial wargame site offering pwn challenges related to system exploitation with different difficulty levels.
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Online hacking game with realistic hacking experience and player interaction.
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