OFFENSIVE INTELLIGENCE - Fourth Edition (2025-2026)
300 OSINT methods to understand, verify, and protect in a connected world
The essential handbook on open-source intelligence (OSINT) for professionals in risk, compliance, and digital security.
How can you collect, cross-check, and interpret information that's already public?
How can you verify data, detect fraud, or assess an organization's online reputation?
OFFENSIVE INTELLIGENCE delivers
300 proven, legal techniques
to turn public information into actionable insight - helping you make better decisions, faster.
You will learn how to:
Search smarter with Google and specialized public databases.
Validate and analyze open information about organizations and markets.
Use OSINT tools for compliance, due diligence, and fraud prevention.
Understand digital footprints and manage online reputation.
Build structured workflows for research and monitoring.
Recognize legal and ethical limits in information gathering.
Who is this book for?
Compliance officers, lawyers, and auditors.
Cybersecurity and risk-management professionals.
Journalists, analysts, and corporate investigators.
Executives and entrepreneurs making fact-based decisions.
Anyone who wants to understand how open data shapes today's world.
About the author:
Philippe Dylewski is a trainer and consultant in OSINT and risk management.
A former psychologist and HR consultant, he has trained hundreds of professionals across Europe and Southeast Asia in open-source intelligence, digital risk mitigation, and ethical investigation methods.
OFFENSIVE INTELLIGENCE - 2025-2026 Edition
A practical guide to mastering the art of finding, validating, and protecting information in the digital age.