Preface

Cybersecurity is the disciplined protection of information systems—hardware, software, data, and people—from unauthorized access, disruption, and harm. Every organization that connects to the internet faces a global threat landscape of criminals, hacktivists, insiders, and nation-state actors who exploit misconfigurations, stolen credentials, and unpatched vulnerabilities faster than defenders can respond without preparation.

This ForgEd textbook presents ten chapters grounded in the security mindset and the classic confidentiality, integrity, and availability goals. You will study threats and adversaries, identity and access management, network and endpoint defenses, cryptography, social engineering, application and web security, incident response, and compliance frameworks that shape privacy and careers. The writing is formal and educational—definitions, history, mechanisms, and implications—not sensational news headlines.

This material is general education, not legal advice. Laws such as GDPR and sector rules like HIPAA vary by jurisdiction and context; consult qualified counsel for compliance decisions. References to NIST publications and frameworks are instructional guides to structured risk management widely used in industry and government. Use the table of contents to study sequentially or to revisit topics before certifications, internships, or workplace security conversations.