Kali Linux Tutorials | Hacking Tools, Cybersecurity News & Writeups

OSINT

Email to Profile: Social Media Search and Free Lookup Tools

Introduction Connecting an email address to a real person can reveal valuable insights. With email-to-profile...

OSINT

Advanced Free Email Lookup and Reverse Search Techniques

Introduction Email addresses are often the keys to digital identities. With the right tools, you...

How to Use Pentest Copilot in Kali Linux

Introduction Artificial Intelligence is changing how cybersecurity professionals work, especially in penetration testing. Tools that...

Install Node.js and npm on Ubuntu 18.04: Three Methods Compared

By Cyber Defence on July 9, 2026

Node.js is an open-source, cross-platform JavaScript runtime that lets you run JavaScript on the server side, outside of a browser. It is widely used for building backend services, REST APIs, and real-time applications. npm is Node’s built-in package manager and the world’s largest...

Set DNS Nameservers on Ubuntu 18.04: Desktop and Server Guide

By Cyber Defence on July 9, 2026

DNS (Domain Name System) is what translates domain names into IP addresses. When you type a website address into your browser, your operating system first checks its local hosts file for a matching entry. If it finds nothing, it queries the configured DNS...

Install Docker on Ubuntu 18.04: Setup, Images, and Containers

By Cyber Defence on July 9, 2026

Docker is a containerization platform that lets you package applications and their dependencies into lightweight, portable containers. Those containers run consistently across any environment, your laptop, a staging server, or a cloud production cluster. Docker is the standard for container deployment...

Install Yarn on Ubuntu 18.04: APT Setup and Essential Commands

By Cyber Defence on July 9, 2026

Yarn is a fast, reliable JavaScript package manager that works alongside npm. It was built to fix some of npm’s early limitations — particularly slow install speeds and inconsistent behavior across different machines and networks. Yarn parallelizes package downloads instead of installing...

Email to Profile: Social Media Search and Free Lookup Tools

By 0xSnow on November 3, 2025

Introduction Connecting an email address to a real person can reveal valuable insights. With email-to-profile searches, social media lookups, and reverse search tools, you can uncover linked accounts, public posts, and verified identities. This process is common in cybersecurity, recruiting,...

Advanced Free Email Lookup and Reverse Search Techniques

By 0xSnow on November 3, 2025

Introduction Email addresses are often the keys to digital identities. With the right tools, you can uncover social media profiles, online activity, and even business records associated with an email. This process, known as email lookup or reverse email search,...

How to Use Pentest Copilot in Kali Linux

By 0xSnow on November 1, 2025

Introduction Artificial Intelligence is changing how cybersecurity professionals work, especially in penetration testing. Tools that once required manual effort are now becoming smarter and more efficient. One of the most interesting AI-assisted tools available today is Pentest Copilot, developed by...

How to Use the Windows Registry to optimize and control your PC.

By Tamilselvan S on October 30, 2025

The Windows Registry Editor lets you easily view and control critical Windows system and application settings. It acts as a central hub, storing configuration information for your hardware, software, and personal preferences. Type regedit in the Start menu or the...

MQTT Security: Securing IoT Communications

By 0xSnow on October 30, 2025

In the rapidly expanding Internet of Things (IoT) ecosystem, billions of devices are constantly exchanging data from smart home appliances and industrial sensors to connected vehicles and healthcare monitors. Behind this seamless communication lies a lightweight protocol that powers most...

Install Apache Maven on Ubuntu 18.04: Stable or Latest Version

By Cyber Defence on July 5, 2026

Java developers use project management tools to automate building their applications. Apache Maven is an open source tool used to manage compilation, testing, and packaging. It uses an XML configuration file called a Project Object Model (POM) to control dependencies. This tutorial...

Install Mono on Ubuntu 18.04: C# Compiler and Runtime Guide

By Cyber Defence on July 4, 2026

Running programs built for Microsoft’s framework on a Linux system is easier than you think. Mono is an open source framework that implements the C# language and compiles .NET tools to run on Unix platforms. It allows developers to run .NET applications...

Add and Delete Users on Ubuntu 18.04: A Practical Guide

By Cyber Defence on July 3, 2026

Managing user accounts is one of the most basic system administration tasks on any Linux server. On Ubuntu 18.04, you can add, modify, and remove users directly from the command line using simple built-in tools. This guide shows you how...

Install Java on Ubuntu 18.04: OpenJDK 11 and OpenJDK 8

By Cyber Defence on July 4, 2026

Many modern programs require Java to run. From development tools like Eclipse to search systems like Elasticsearch, Java is a core package for web hosts. There are different versions of Java available. You can use OpenJDK, which is the open...

Install Wine on Ubuntu 18.04: Run Windows Apps on Linux

By Cyber Defence on July 3, 2026

Wine (short for “Wine Is Not an Emulator”) is a compatibility layer that lets you run Windows applications on Linux, macOS, and FreeBSD. Instead of emulating Windows hardware, Wine translates Windows system calls into equivalent POSIX calls that Linux understands natively....