Provides an in-depth analysis of buffer overflow attacks, covering their identification, exploitation, and prevention. The text features contributions from several security experts who detail various vulnerability types, including stack overflows, heap corruption, and format string bugs. Readers are introduced to essential concepts like assembly language, memory allocation, and the development of shellcode for diverse operating systems. Practical case studies illustrate real-world risks in platf...
Feb 28, 2026•16 min
A comprehensive resource for Cisco Certified Networking Associate (CCNA) exam preparation, focusing on Cisco Routing & Switching. It systematically breaks down complex networking concepts into four modules, covering essential Cisco IOS commands, configuration scenarios, and troubleshooting techniques. The guide explains crucial topics such as subnetting, VLANs, routing protocols like OSPF and EIGRP, security features like ACLs and VPNs, and other vital network services, making it a practical...
Feb 27, 2026•35 min
Focusing on deploying and utilizing Wazuh for enhanced cybersecurity. Authored by Rajneesh Gupta, a seasoned expert, and endorsed by Santiago Bassett, CEO of Wazuh, the book targets security analysts, SOC analysts, and security architects. It covers threat detection through integration with tools like Suricata and malware detection using Wazuh's FIM and VirusTotal. Furthermore, the text explores threat intelligence, automation, and incident response with platforms such as MISP, TheHive, and Cort...
Feb 26, 2026•34 min
A thorough overview of Terraform. It covers foundational concepts like installation, configuration, and basic syntax, progressing to advanced techniques such as managing multiple environments, implementing CI/CD pipelines, and integrating with other tools like Kubernetes and HashiCorp Vault. The book also addresses real-world use cases, including deploying highly available applications, automating disaster recovery, and managing security and compliance within infrastructure as code. Throughout, ...
Feb 25, 2026•31 min
A comprehensive textbook or guide focusing on the implementation and analysis of fundamental data structures and algorithms using the Ruby programming language. It covers various core concepts, starting with abstract data types (ADTs), their implementation as data types in Ruby, and the importance of assertions for program correctness. The text details common data structures like queues, stacks, lists, binary trees (including AVL and 2-3 trees), sets, and maps, discussing both contiguous and lin...
Feb 24, 2026•54 min
Explores the application of Reinforcement Learning (RL) to cyber operations, particularly penetration testing. It begins by outlining the foundations of red teaming and the significance of data in cybersecurity, including various scanning techniques and vulnerability databases. The source then thoroughly explains RL theory, detailing concepts like Markov Decision Processes (MDPs) and algorithms such as DQN and A2C. A substantial portion is dedicated to the practical implementation of RL in pen-t...
Feb 23, 2026•23 min
A comprehensive overview of ransomware. The text explores the history and evolution of ransomware attacks, detailing early instances and modern, more sophisticated threats like double and triple extortion. It also outlines strategies for mitigation and recovery, emphasizing the importance of penetration testing—distinguishing it from vulnerability scanning—and the development of robust incident response and disaster recovery plans. Specific attention is given to the SolarWinds attack as a signif...
Feb 22, 2026•58 min
A comprehensive guide to building a Software as a Service (SaaS) application using Ruby on Rails 7. It begins with setting up the development environment, including Ruby and Rails installation, project initialization with PostgreSQL, and Git version control. The text then progresses to core Rails concepts like MVC, routing, testing (unit, controller, system), and front-end tools like TailwindCSS and HotWire, covering features such as Turbo Frames and Streams for dynamic interfaces. Furthermore, ...
Feb 21, 2026•29 min
Explores the multifaceted domain of practical cybersecurity architecture, focusing on the strategic design, implementation, and ongoing management of secure systems within organizations. It emphasizes the importance of understanding business goals, organizational context, and risk tolerance as foundational elements for effective security design. The material covers various architectural processes, methodologies like TOGAF and SABSA, and crucial considerations for different scopes, from enterpris...
Feb 20, 2026•16 min
Outlines comprehensive mobile penetration testing, covering Android and iOS application security. It describes essential methodologies like reconnaissance, vulnerability assessment, and exploitation, alongside reporting and remediation strategies. The text explores various tools used in the process, such as Kali NetHunter, and discusses device compatibility, rooting, and jailbreaking. Furthermore, it highlights emerging threats like AI-based attacks and IoT vulnerabilities, emphasizing the impor...
Feb 19, 2026•19 min
A practical, step-by-step guide to penetration testing, designed for individuals new to ethical hacking. It covers a comprehensive range of topics, starting with lab setup preparations that include installing virtual machines for both attacker (Kali Linux) and victims (Metasploitable, Windows 10). The guide then progresses through various attack methodologies such as Wi-Fi penetration testing, post-connection attacks like Man-in-the-Middle (MiTM), vulnerability scanning, and client-side attacks ...
Feb 18, 2026•58 min
Offers an in-depth exploration of React development, focusing on advanced concepts and practical application. It covers core React patterns such as Provider, Composite, and Summary for efficient component design, alongside strategies for optimizing React performance through rendering control and dependency array management. A significant portion addresses developer tooling like ESLint and Prettier for code quality, and React Developer Tools for debugging. The text extensively explains TypeScript...
Feb 17, 2026•22 min
Focusing on Google Kubernetes Engine (GKE), the book serves as a practical guide for developers to understand and utilize Kubernetes for application deployment and management. It covers fundamental concepts such as containerization with Docker, deploying applications to Kubernetes, managing resources, scaling, handling stateful applications, and implementing secure and automated operations, often providing code examples and practical scenarios. The book also introduces various Kubernetes objects...
Feb 16, 2026•37 min
A comprehensive analysis of the evolving landscape of cyber warfare, information warfare, and artificial intelligence. It examines how these domains have become intertwined with kinetic warfare, particularly through case studies related to the Russia-Ukraine conflict, such as the Wagner Group's influence operations and cyber attacks on critical infrastructure like Gazprom pipelines. The text also critiques the cybersecurity industry's accountability issues, highlighting the historical reluctance...
Feb 15, 2026•44 min
Focusing heavily on web application security and the powerful Metasploit Framework. It covers essential stages of penetration testing, including reconnaissance and scanning using tools like Nmap and Shodan, and delves into exploiting vulnerabilities such as SQL injection, Cross-Site Scripting (XSS), and Cross-Site Request Forgery (CSRF). The material also explains authentication and session management flaws, discusses cryptographic implementation weaknesses, and explores the use of automated web...
Feb 14, 2026•1 hr 12 min
It details how to extract, refactor, and manage components using Rails engines, addressing dependency management, database migration, and continuous integration. The text also explores architectural patterns like Hexagonal Architecture and Data-Context-Integration (DCI) in the context of CBRA, and demonstrates the transferability of component principles to other programming languages like Kotlin, Java, and C#. Ultimately, it emphasizes the benefits of modularity for maintainability and comprehen...
Feb 13, 2026•28 min
An educational guide on ethical hacking and cybersecurity. The content focuses on utilizing Python for various security-related tasks, including exploring vulnerabilities, mastering stealth techniques, conducting cyber espionage, and implementing secure system design principles. The book emphasizes responsible and ethical application of hacking knowledge for defensive purposes in the digital world. You can listen and download our episodes for free on more than 10 different platforms: https://lin...
Feb 12, 2026•24 min
A comprehensive guide to mastering Ruby for creating robust and adaptable software. The book introduces fundamental concepts like object-oriented programming, control flow, and data structures, then progresses to advanced topics such as metaprogramming, concurrency, and machine learning integration. It also covers essential practices for code quality and scalability, including testing, error handling, DevOps, and cloud deployment strategies like serverless architectures and containerization. Ult...
Feb 11, 2026•18 min
A comprehensive guide for computer security professionals and students interested in password security and ethical hacking. It explores various methods for obtaining and cracking password hashes, specifically focusing on Windows authentication protocols like NTLM and Kerberos, and also addressing Linux password cracking. The text details the use of Kali Linux tools such as Hashcat and John the Ripper, explaining how to utilize wordlists, perform brute-force and hybrid attacks, and even create cu...
Feb 10, 2026•40 min
Examines cybersecurity through the lens of first principles, suggesting that organizations should focus on reducing the probability of material impact from cyber events. Authored by Steve Winterfeld and Rick Howard, the text defines core cybersecurity concepts like zero trust, intrusion kill chain prevention, resilience, risk forecasting, and automation, advocating for their strategic implementation. It explores the historical evolution of cybersecurity practices, critiques traditional approache...
Feb 09, 2026•31 min
Covers core principles like logical reasoning, counting, and probability, essential for problem-solving. The text also explains algorithm analysis, including time complexity and Big-O notation, and explores various algorithmic strategies such as iteration, recursion, brute force, and dynamic programming. Furthermore, it discusses data structures like lists, queues, trees, and hash tables, and provides insights into how computers fundamentally operate, from CPU architecture to memory hierarchy an...
Feb 08, 2026•30 min
Explores the multifaceted world of hacking and its profound impact on democracy and society. It traces the historical roots of hacker culture, from early groups at MIT and the Chaos Computer Club in Germany, to the rise of cypherpunks advocating for privacy through technology. The sources highlight the ongoing tension between governmental surveillance and individual liberty, exemplified by cases like Edward Snowden and WikiLeaks, and examine how digital technologies can both enable and threaten ...
Feb 07, 2026•18 min
Provides an overview of Cisco CCNA commands for beginners and intermediate users, focusing on practical applications in real networks and simulation labs. It systematically covers fundamental networking concepts such as IP subnetting, including classful addressing and binary conversions, and device connectivity with cabling types. The guide then transitions into detailed sections on command-line interface shortcuts and helpful commands, followed by extensive coverage of router configuration, inc...
Feb 06, 2026•30 min
Provides practical applications of generative AI, particularly ChatGPT and other large language models (LLMs), for enhancing cybersecurity skills. It covers a wide range of topics, including vulnerability assessment, secure software development, governance, risk, and compliance (GRC), and security awareness training. The book also explores red teaming and penetration testing strategies, threat monitoring and detection, and the implementation of local AI models for privacy-conscious cybersecurity...
Feb 05, 2026•17 min
A comprehensive guide for the Cisco CCNA (200-301) exam, providing a practical, case-study-based approach to networking fundamentals. It covers a wide array of topics including network components, topologies, IP addressing (IPv4 and IPv6), wireless principles, and switching concepts. Furthermore, the document explores critical network services like NAT, DHCP, NTP, and Syslog, alongside security features such as VPNs, Access Control Lists, and various authentication methods. Finally, it introduce...
Feb 04, 2026•32 min
A beginner's guide to CCNA Routing and Switching certification, focusing on fundamental networking concepts and Cisco-specific technologies. It covers various routing protocols like RIP, OSPF, and EIGRP, explaining their operations, configurations, and comparisons. The text also explores essential network components such as routers and switches, detailing their functions, security implications, and how to manage their configurations through the Cisco IOS command-line interface. Additionally, the...
Feb 03, 2026•20 min
Focusing on optimizing database performance for Ruby on Rails applications. It provides practical guidance on topics such as data correctness, modifying busy databases without downtime, and optimizing Active Record queries. The text also explores advanced PostgreSQL features like various index types, database maintenance, managing connections, and bulk data operations, all aimed at improving the scalability and reliability of Rails applications using PostgreSQL. You can listen and download our e...
Feb 02, 2026•40 min
Provides over 100 solutions for common problems faced by Android developers. The book covers a wide range of topics, from fundamental Android components like Activities, Layouts, and Fragments, to more advanced concepts such as multimedia integration, data storage, network communication, and Google services like Cloud Messaging and Sign-in. It also addresses optimizing application performance, handling user interactions and device sensors, and preparing applications for the Google Play Store, ma...
Feb 01, 2026•40 min
Explores the multifaceted field of prompt engineering, defining it as the art of crafting precise instructions to guide large language models (LLMs) towards desired outputs. It traces the evolution of OpenAI's GPT models, from GPT-1 to GPT-4, and details various prompt engineering techniques, including zero, one, and few-shot prompting. The source dedicates significant attention to the practical application of prompts across diverse professional domains such as business, healthcare, education, l...
Jan 31, 2026•21 min
A comprehensive reference for the Ruby programming language, specifically covering versions up to 3.2. It introduces fundamental concepts like object-oriented programming, data structures such as arrays and hashes, and control flow mechanisms including loops, conditionals, and pattern matching. The guide also explores more advanced topics like exceptions, input/output operations, concurrency with threads, fibers, and Ractors, and metaprogramming techniques. Furthermore, it discusses development ...
Jan 30, 2026•23 min
