> For the complete documentation index, see [llms.txt](https://cajac.gitbook.io/ctf-notes/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cajac.gitbook.io/ctf-notes/enum/osint/osint-introduction.md).

# OSINT - Introduction

Open source intelligence (OSINT) is the collection and analysis of data gathered from open sources (overt sources and publicly available information) to produce actionable intelligence. OSINT is primarily used in [national security](https://en.wikipedia.org/wiki/National_security), [law enforcement](https://en.wikipedia.org/wiki/Law_enforcement), and [business intelligence](https://en.wikipedia.org/wiki/Competitive_intelligence) functions and is of value to analysts who use non-sensitive intelligence in answering [classified](https://en.wikipedia.org/wiki/Classified_information), [unclassified](https://en.wikipedia.org/wiki/Classified_information#Unclassified), or [proprietary intelligence](https://en.wikipedia.org/wiki/Trade_secret) [requirements](https://en.wikipedia.org/wiki/Intelligence_requirement) across the previous intelligence disciplines.

## Resources

Open-source intelligence - Wikipedia: <https://en.wikipedia.org/wiki/Open-source_intelligence>

OSINT Framework: <https://osintframework.com/>