300 OSINT Techniques, Tools, and Methods for
Due Diligence, Background Checks, Fraud Detection, and Business Intelligence
Fourth Edition (2025-2026)
OFFENSIVE INTELLIGENCE is an investigation handbook combining OSINT, field methods, and analytical tools for professionals in risk management, compliance, and digital security.
It focuses on real-world investigation workflows, not theory.
How do you verify a company before a partnership or acquisition?
How do you assess a person's digital footprint without crossing legal boundaries?
How do you detect early signals of fraud, conflicts of interest, or reputational risk using open data?
You will learn how to:
Perform advanced Google dorking and OSINT search techniques
Conduct background checks and integrity assessments
Perform corporate due diligence and compliance research
Detect fraud, shell companies, and reputational risks
Analyze digital footprints, social media, and online presence
Build repeatable investigation workflows for business and risk analysis
Understand the legal and ethical boundaries of OSINT and investigation work
This book delivers 300 practical, legally compliant investigation techniques designed to turn public information into decision-grade intelligence for business and security professionals.
Who is this book for?
Compliance officers, lawyers, and auditors
Risk management and cybersecurity professionals
Due diligence consultants and corporate investigators
Executives, entrepreneurs, and M&A professionals
Journalists and analysts working with open information
About the author:
Philippe Dylewski is a consultant and trainer specializing in OSINT, investigation methods, due diligence, and digital risk analysis, with operational experience across Europe and Southeast Asia. He has trained compliance teams, investigators, and executives in practical, legally compliant intelligence and investigation workflows.
OFFENSIVE INTELLIGENCE - 2025-2026 Edition
A practical guide to finding, validating, and protecting information for investigation, risk management, and business decision-making in an increasingly exposed digital world.
