joe-shenouda/awesome-cyber-skills

A curated list of hacking environments where you can train your cyber skills legally and safely

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Summary Information

Updated 23 minutes ago
Type:Curated List / Learning ResourceCategory(s):Penetration Testing & Red TeamSecurity & Privacy
Added to GitGenius on September 17th, 2026
Created on January 4th, 2017
Open Issues & Pull Requests: 0 (+0)
GitHub issues: Enabled
Number of forks: 540
Total Stargazers: 4,682 (+0)
Total Subscribers: 196 (+0)

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Median issue/PR response: 598.0 days
Mean response time: 637.9 days
90th percentile: 677.8 days
Tracked items: 2

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Closed in 7 days: 2
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Detailed Description

Awesome Cyber Skills is a curated directory of free, legal, and safe training environments for practicing cybersecurity skills.

The project addresses the need for legitimate practice grounds where security professionals and learners can develop offensive and defensive capabilities without legal risk. It compiles websites organized by specialty—web application security, cryptography, reverse engineering, capture-the-flag competitions, blue team operations, cloud security, mobile security, system exploitation, tutorials, and miscellaneous challenges—each tagged with difficulty levels from beginner to advanced. The approach is straightforward: a categorized list with brief descriptions of each platform's focus and learning style, whether tutorial-guided or self-directed exploration.

Someone considering this resource should know it serves as a reference guide rather than a training platform itself. It suits anyone building a cybersecurity skill set who wants a single entry point to discover legitimate practice environments across multiple domains. The list is particularly valuable for those uncertain where to start, as difficulty badges help match learners to appropriate challenges. The project emphasizes that every listed site is free and legal, removing barriers to entry for students, career changers, and professionals seeking to maintain current skills.

The project maintains an active approach to curation, with the README explicitly noting that the list is regularly updated and inviting community contributions for sites not yet included. Development activity centers on expanding coverage across security domains and keeping existing entries current as platforms evolve.