OINST GUIDE BY GN67

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🔎 What is OSINT?

OSINT = Open-Source Intelligence

It means finding, collecting, and analyzing information that is publicly available.

Think of it like being an internet detective 🕵️‍♂️🌐 — but instead of hacking into someone's account, you use information that is already available to the public.

OSINT (Open Source Intelligence) is gathering info from publicly available sources. Used by journalists, pen testers, and investigators. Here's a starter overview.
Google Dorking Advanced search operators can find exposed files, login pages, cameras. 

1. Example: filetype:pdf site: xyz confidential

xyz is a website or website type name. 
finds PDFs on sites containing the word confidential. None of this touches any system — it's just smart searching.Shodan A search engine for internet-connected devices. You can find exposed servers, webcams, industrial systems. Sobering to see what people leave open.
WHOIS & DNS Domain registration records often expose owner emails, addresses. Tools like

2. nslookup xyz

reveal DNS infrastructure.Username lookups Sites like Sherlock (open source tool) search hundreds of platforms for a given username. People reuse usernames everywhere.
The takeaway The amount of info publicly available about most people and companies is alarming. Google yourself. Check your domain registrations. Audit what you expose.