Deep Dive into Open-Source Intelligence
1h 15mIntermediate2025-03-11
Authors

Mike Wylie
Information Security Expert and Threat Manager
Course details
If you’ve ever engaged in any sort of internet sleuthing—doing research on a company before an interview, looking up someone on social media before you meet them—then you’ve already engaged in some open-source intelligence, or OSINT. OSINT is, essentially, using publicly available information in an intelligence context. In this course, information security expert Mike Wylie shows how to effectively engage in OSINT, from the value of using it, to methods of gathering information. He covers topics like passive reconnaissance vs. active reconnaissance, methods for tracking organizations and employees, and crafting advanced search queries to find sensitive indexed information. If you’re conducting any kind of penetration test, OSINT provides a good foundation to get you started.
Skills covered
Business IntelligenceEssential TrainingData ScienceBusiness Analysis and Strategy
Concepts
0. Introduction
- 01 - Beginning your penetration test with OSINT
- 02 - Disclaimer
1. What Is OSINT
- 03 - OSINT overview
- 04 - Understanding the value of OSINT
- 05 - Introduction to passive reconnaissance
- 06 - Introduction to active reconnaissance
- 07 - Pros and cons of active and passive reconnaissance
- 08 - Introduction to sources of OSINT
- 09 - Introduction to VPN and anonymizers
2. Organizational OSINT
- 10 - Introduction to locations and addresses fingerprinting
- 11 - Using breach data for OSINT
- 12 - Introduction to using business records for OSINT
- 13 - Using job posts for OSINT
3. Employee OSINT
- 14 - Using OSINT to find employees
- 15 - Using OSINT to find phone numbers
- 16 - Using OSINT to find email addresses
- 17 - Using social media sites for OSINT
- 18 - Extracting metadata from images
4. Technological OSINT
- 19 - Introducing domain names and DNS discovery
- 20 - Crawling websites to gather OSINT data
- 21 - Finding deleted information in web archives
- 22 - Introduction to using search engines for OSINT
- 23 - Google hacking or dorking for OSINT
- 24 - Discovering OSINT data in the dark web
- 25 - Introduction to RIRs
- 26 - How generative AI transforms OSINT
- 27 - Cryptocurrency OSINT investigations
Conclusion
- 28 - Where to go with the OSINT data you collect
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