Public is not verified
A widely shared claim may trace back to one mistaken or manipulated source.
Primer chapter · OSINT
Open-source intelligence
At a glance
OSINT turns publicly available material into an assessed answer. The hard part is verifying provenance, location, timing and competing explanations—not simply finding something online.
Public information. Explicit methods. Checkable conclusions.
Key distinctions
The essentials
Traceable sources
Researchers retain the original URL, publication date, access date and context so others can check the evidence.
Explicit limitations
An assessment identifies what the material supports, what it cannot establish and which interpretations remain tentative.
Read at your own depth
Go deeper
Expand a topic for explanations, limitations and source-linked context.
Sources & scope
This chapter is a public-source introduction. Agency sources describe their own institutions; historical interpretation and the guide’s learning exercises are identified separately. It does not claim access to classified operational practice.