Picture this: you’re passionate about cybersecurity, eager to dive deep into ethical hacking, penetration testing, and malware analysis, but your budget is tighter than Fort Knox. What if we told you that some of the most valuable free hacking ebooks and security ebooks are available absolutely free? Welcome to the ultimate treasure trove of cybersecurity knowledge that won’t cost you a penny.

The world of hacking ebooks and security ebooks has exploded with incredible resources from industry legends, security researchers, and ethical hackers who believe knowledge should be accessible to everyone. From MIT professors sharing advanced exploitation techniques to OWASP contributors publishing comprehensive web application security guides, these free ebooks represent millions of dollars worth of expertise, freely available to anyone hungry for knowledge.

Whether you’re a complete beginner wondering how hackers think, a seasoned IT professional switching to cybersecurity, or an experienced pentester seeking to sharpen specific skills, this curated collection of security and hacking ebooks has something extraordinary for you. We’ve scoured GitHub repositories, university archives, conference proceedings, and official documentation to bring you the most comprehensive, up-to-date collection of free hacking security ebooks available anywhere on the internet. Along with these resources, you can also use these 124 legal hacking websites to practice what you’ve learned.

⚖️ Important Legal Notice

Disclaimer: The contributor(s) cannot be held responsible for any misuse of the data. This repository is just a collection of URLs to download ebooks for free. Download the ebooks at your own risks.

DMCA Policy: DMCA takedown cannot be possible as we are not republishing the books/infringement of code, but we are just hosting the links to 3rd party websites where these books can be downloaded. To know more on DMCA takedown policy, please refer to GitHub’s DMCA takedown policy.

All contributors to this collection are recognised and appreciated for helping build this valuable resource for the cybersecurity community.

🛡️ Defensive Security Resources

Building impenetrable digital fortresses requires more than just wishful thinking. These free Defensive security ebooks focus on the defensive side of cybersecurity, teaching you how to think like an attacker to better protect your systems.

⚔️ Offensive Security and Penetration Testing

Ready to think like a hacker? These free ebooks dive deep into offensive security techniques, ethical hacking methodologies, and penetration testing frameworks that security professionals use to identify vulnerabilities before the bad guys do.

🔍 General Hacking and Penetration Testing

🐧 Kali Linux and BackTrack

🌐 Web Application Security

🔬 Network Analysis and Penetration Testing

Network security assessment requires specialised tools and methodologies. These free security eBooks focus on network analysis, traffic inspection, and penetration testing techniques that explores hacking.

🔧 Reverse Engineering and Malware Analysis

Understanding malicious software and reverse engineering techniques is crucial for cybersecurity professionals. These free security eBooks provide comprehensive coverage of malware analysis and reverse engineering methodologies.

🐍 Programming for Security Professionals

Programming skills are essential for modern cybersecurity professionals. These free hacking eBooks focus on security-oriented programming languages and development practices.

📚 Additional Security Resources

These supplementary free security eBooks provide broader cybersecurity knowledge, covering legal aspects, professional development, and comprehensive security frameworks.

Start with Free Hacking Ebooks

Your journey into cybersecurity mastery begins with a single download. These hacking ebooks aren’t just random PDFs scattered across the internet – they’re carefully curated resources that have educated thousands of security professionals worldwide. Start with the defensive security materials if you’re new to cybersecurity, then gradually work your way through offensive techniques as your confidence grows.

Many red team, blue team members, hackers and security researchers recommend beginning with general ethical hacking guides before diving into specialised topics like advanced malware analysis or reverse engineering. The beauty of these free ebooks lies in their progressive difficulty levels, ensuring you’ll always find resources that challenge you without overwhelming your current skill level. If you’re jumping directly into tools, then check these collection of tools for Red, Blue and Purple team.

These eBooks contain powerful knowledge that should only be used ethically and legally. Always obtain proper authorisation before conducting any security assessments, and focus on using offensive techniques to strengthen your organisation’s defensive posture rather than causing harm.

That’s it, Enjoy!