This resource provides a comprehensive list of college and university-level courses covering various topics in computer science, including data structures, algorithms, software engineering, artificial intelligence, machine learning, computer networks, security, and more. Please refer to the NOTES section for general information and CONTRIBUTING.md for contribution guidelines.
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A comprehensive guide for hardening GNU/Linux systems with practical step-by-step instructions.
A comprehensive and immersive 13-week course by NYU Tandon's OSIRIS Lab introducing students to offensive security with practical applications and research projects.
A cybersecurity challenge where you play the role of an incident response consultant investigating an intrusion at Precision Widgets of North Dakota.
A detailed SSH cheat sheet for managing SSH connections and troubleshooting common issues.
The SOC Academy offers official VirusTotal certification courses to help cybersecurity professionals maximize its functionalities and advance their careers.
Online IT Security and Privacy Awareness training courses to help companies meet compliance requirements and reduce cybersecurity risks.
A series of vulnerable virtual machine images with documentation to teach Linux, Apache, PHP, MySQL security.
Guidelines for contributing to a cybersecurity tools and resources list
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Mandos Brief Newsletter
A weekly newsletter providing cybersecurity leadership insights, industry updates, and strategic guidance for security professionals advancing to management positions.

PTJunior
An AI-powered penetration testing platform that autonomously discovers, exploits, and documents vulnerabilities while generating NIST-compliant reports.

CTIChef.com Detection Feeds
A tiered cyber threat intelligence service providing detection rules from public repositories with varying levels of analysis, processing, and guidance for security teams.

ImmuniWeb® Discovery
ImmuniWeb Discovery is an attack surface management platform that continuously monitors an organization's external digital assets for security vulnerabilities, misconfigurations, and threats across domains, applications, cloud resources, and the dark web.

Checkmarx SCA
A software composition analysis tool that identifies vulnerabilities, malicious code, and license risks in open source dependencies throughout the software development lifecycle.

Orca Security
A cloud-native application protection platform that provides agentless security monitoring, vulnerability management, and compliance capabilities across multi-cloud environments.

DryRun
A GitHub application that performs automated security code reviews by analyzing contextual security aspects of code changes during pull requests.