# cipherstorm > A cultivated archive of hacking, penetration testing, and security e-books — from foundational network defense to cutting-edge offensive research. > Organized by domain, each entry includes year of publication, format (📕 paid / 📖 free), and source links. Categories include: - Penetration Testing - Web Application Security - Reverse Engineering - Malware Analysis - Exploit Development - Cryptography - Incident Response - Digital Forensics - Social Engineering - Security Management & Policy This collection is for **educational purposes only**. Always respect the law and obtain proper authorization before testing any systems. _Please read [contribution guidelines](contributing.md) before submitting changes._