Bhardwaj A. Practical Approach to Open Source Intelligence (OSINT). Vol. 2 2025

Textbook in PDF format

This book offers a practical and in-depth exploration of Open Source Intelligence (OSINT) tailored for cybersecurity professionals, digital investigators, and threat analysts. It guides readers through actionable methodologies across key OSINT domains, such as domain/IP tracking, phone and email intelligence, vulnerability assessments, and threat profiling, using real-world tools and case studies. With focused coverage on both Windows and Linux environments, as well as high-profile ransomware and data breach investigations, this book bridges offensive techniques with ethical, responsible analysis. The book also emphasizes the importance of structured reporting, helping readers transform raw data into impactful intelligence. By combining technical rigor with strategic communication, this book equips readers with the skills needed to conduct effective, legally sound, and result-driven OSINT investigations.
Preface
Domain URL, IP address, and image intelligence
People and Phone Intelligence
Gathering vulnerabilities from OS and applications
Security evaluation of Windows OS
Email and domain intelligence
Security evaluation of Linux OS and apps
Threat profiling ransomware
Threat profiling data breaches
Threat profiling attackers
Writing OSINT reports
Conclusion
Index