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Learn OSINT: Open-Source Intelligence (Udemy.com)

Become a cyber detective - This course prepares you to uncover hidden online information with Open Source Intelligence!

Created by: Aleksa Tamburkovski

Last updated August 2026

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What you will learn

  • Gather publicly available data to perform investigations
  • Analyze, and interpret data in investigations
  • Stay anonymous while browsing the web
  • Create, and use sock puppets to obtain information
  • Enhance and optimize the process of using search engines
  • Search people by their phone numbers, email addresses, names, and usernames
  • Search businesses and related information
  • Analyze and trace images
  • Investigate locations without the need to go there in person
  • Analyze blockchain transactions

How it compares

Against the other 523 rated Udemy courses in Hacking on CourseDuck:

  • Rating4.5 out of 5higher than 51% of them
  • Reviews198#392 of 524 by number of reviews
  • Length5.1 hourslonger than 50% of them
  • Last updatedAugust 2026more recently than 84% of them

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Course Description

Master the art of Open Source Intelligence and unlock the secrets hidden across the internet. This course takes you from a beginner to an advanced OSINT practitioner with a straightforward, expert-guided approach.

You’ll learn how to safely and effectively gather intelligence from publicly available sources, utilizing the same techniques used by investigators, cybersecurity professionals, and journalists. This course covers all essential aspects of OSINT, from the ethical considerations of information gathering to advanced search techniques and beyond.

Explore a wide range of tools and techniques for uncovering information about individuals, companies, and even physical locations. You'll master the use of search engines, social media analysis, email tracing, and image verification, all while maintaining your anonymity and protecting your data.

Learn how to set up secure environments using virtual machines, VPNs, and specialized operating systems like CSI Linux. Delve into the world of sock puppets, creating and managing fake identities to gather intelligence undetected. You’ll also explore the dark web, understand the importance of encryption, and discover how to remove your own data from the internet.

By the end of this course, you’ll have a practical, hands-on skill set that will make you proficient in the art of OSINT. Whether you're aiming to enhance your career or satisfy your curiosity, this course is your gateway to mastering the world of online intelligence gathering.

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Instructor Details

Aleksa Tamburkovski

Hi! I am Aleksa. I am a Cybersecurity and Ethical Hacking professional with over 7 years of hands-on experience in penetration testing, security assessments, and real world attack simulation. My work focuses on identifying security weaknesses, reducing risk, and helping organizations strengthen their defensive posture against modern cyber threats.

I am a Co-Founder and Lead Penetration Tester at Bedem Security, where I work with organizations to assess infrastructure, applications, and networks, and to improve their overall security maturity. Through both consulting and research-driven testing, I have contributed to the identification of vulnerabilities across a range of environments, including web applications, networks, and enterprise systems.

As an instructor, my goal is to make cybersecurity practical, structured, and accessible, bridging the gap between theory and real world application. My courses emphasize hands-on skills, attacker mindset, and defensive strategies that reflect how security challenges actually appear in modern organizations.

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Reviews

4.5

198 ratings on Udemy

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By Robert Colyar on 2/26/2026

I learned so much from this course! It is a perfect introduction.

By Snehaansh Kamble on 1/27/2026

Yes! I felt like I was able to learn plenty about the various open source intel tools and techniques available for use today.

By Shamsul Bahri bin Faat on 6/21/2025

The course module and content are excellent and well prepared

By Bjarne Grigoleit on 5/14/2025

I’m from europe, so some mentioned tools are not that useful from my perspective.

By Aygul Shakirova on 4/29/2025

I found the course well-structured. As a suggestion for future updates, it would be great to see a more balanced representation of Europe-based resources alongside the many excellent North America-based links. This would make the course even more universally applicable. Thank you for putting together such a valuable course!

By Zachary Falaiye on 1/28/2025

It seems simple and straightforward enough. Let us see how the rest of it goes.

By Muralidhar Canjivaram on 11/13/2024

It was simple and easy to understand, and as a professional investigator, I would recommend this course to all interested in taking a deep dive into the OSNIT world.

By Edward Kiyomori Watanabe Shiraki on 10/9/2024

This course is very informative and well explained to learn OSINT. Great course.

By Dustin Birch on 9/13/2024

Very informative. Did a great job putting in time and effort to help. Learning a lot.

By Gianluca Galimberti on 9/7/2024

Very good course! very useful for understand and start to work in OSINT project

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Read all 198 reviews on Udemy

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Overall Score : 90 / 100