This book is intended for students and professionals who want to master open source intelligence and digital investigations with Kali Linux, exploring techniques, tools, and applications focused on current demands in cybersecurity, forensic analysis, and incident response. The 2025 edition brings practical updates and new content compared to the 2024 edition, expanding the focus on automation, social network analysis, scraping, dark web, metadata, geolocation, and integration of data collection workflows for real-world use in corporate environments, forensic investigations, and threat monitoring.
Going beyond the Kali Linux ecosystem, this guide includes indispensable tools and resources for OSINT professionals, forming a complete operational arsenal for advanced investigations.
You will learn to:
• Configure and optimize Kali Linux for OSINT
• Collect and analyze data from social networks and the dark web
• Use Maltego, theHarvester, SpiderFoot, Recon-ng, Shodan
• Perform web scraping, automation, and API integration
• Extract and analyze metadata from files and images
• Monitor threats, profiles, domains, IPs, and digital assets
• Automate data collection, validation, and reporting workflows
• Integrate anonymity, proxy, Tor, and operational security techniques
• Apply OSINT in corporate, competitive, and incident response investigations
By the end, you will be ready to implement modern OSINT solutions and advance your professional performance in threat analysis, digital forensics, and security intelligence.
kali linux, osint, digital investigation, data collection, cybersecurity, forensic analysis, automation, dark web, social networks, metadata, shodan, maltego, spiderfoot, recon-ng, web scraping, threat monitoring, forensics, anonymity, security intelligence
Diego Rodrigues
Technical Author and Independent Researcher
ORCID: https://orcid.org/0009-0006-
StudioD21 Smart Tech Content & Intell Systems
Email: [email protected]
LinkedIn: linkedin.com/in/diegoexpertai
International technical author (tech writer) focused on the structured production of applied knowledge. He is the founder of StudioD21 Smart Tech Content & Intell Systems, where he leads the creation of intelligent frameworks and the publication of didactic technical books supported by artificial intelligence, such as the Kali Linux Extreme series, SMARTBOOKS D21, among others.
Holder of 42 international certifications issued by institutions such as IBM, Google, Microsoft, AWS, Cisco, META, Ec-Council, Palo Alto, and Boston University, he works in the fields of Artificial Intelligence, Machine Learning, Data Science, Big Data, Blockchain, Connectivity Technologies, Ethical Hacking, and Threat Intelligence.
Since 2003, he has developed more than 200 technical projects for brands in Brazil, the USA, and Mexico. In 2024, he established himself as one of the leading technical book authors of the new generation, with over 180 titles published in six languages. His work is based on his proprietary TECHWRITE 2.3 applied technical writing protocol, focused on scalability, conceptual precision, and practical applicability in professional environments.