In this tutorial, you will learn how to install OpenSSH Server on Ubuntu 26.04, configure the SSH service, and connect remotely to an Ubuntu virtual machine using SSH. The example uses an Ubuntu 26.04 VM running in VirtualBox and a Kali Linux VM as the SSH client. What Is OpenSSH? OpenSSH (Open Secure Shell) provides … Read more
Sublime Text is a fast, lightweight, and powerful text editor widely used by developers, programmers, and other users who need a flexible editor. It supports syntax highlighting, multiple programming languages, customizable themes, plugins, and many other productivity features. In this tutorial, you will learn how to install Sublime Text on Ubuntu 26.04 Desktop using two … Read more
By default, the root user is locked for direct login on Ubuntu. Instead, Ubuntu provides the first user account with sudo privileges so administrative tasks can be performed without logging in as root. In this guide, you will learn how to enable the root user on a freshly installed Ubuntu 26.04 Desktop VM running in … Read more
If you have followed our previous tutorial on how to install Ubuntu 26.04 LTS Desktop on VirtualBox, the next important step is to update your newly installed Ubuntu system. In this guide, you will learn how to check the installed Ubuntu version, update package repositories, upgrade installed packages, and reboot Ubuntu if required. Check the … Read more
Learn how to remove or delete an administrator or standard user account in Windows 11 using Command Prompt, Control Panel, Settings, and Computer Management. Deleting unused user accounts helps keep your Windows 11 system clean and secure. Whether you want to remove an old administrator account or a normal user account, Windows provides multiple ways … Read more
Creating a new administrator account in Windows is useful when you want to manage your PC securely, troubleshoot system issues, or provide administrative access to another user without sharing your primary account. Windows 11 offers multiple ways to create a new administrator user, whether you prefer using Command Prompt, Computer Management, or the Settings app. … Read more
Learn how to install Ubuntu Desktop 26.04 LTS on Oracle VirtualBox 7 running on Windows 11 with this simple beginner-friendly tutorial. Ubuntu is one of the most popular Linux distributions for developers, ethical hackers, students, and system administrators. Instead of installing Ubuntu directly on your computer, you can run it safely inside Oracle VirtualBox as … Read more
The Open Worldwide Application Security Project (OWASP) is a global, open community that provides guidance, tools, and best practices for improving application security. The OWASP Top 10 is the most widely recognized awareness document for developers, security professionals, and organizations to understand the most critical web application security risks. Compared to OWASP Top 10:2021, the … Read more
DNS tunneling is a technique used to transfer data or establish a Command and Control (C2) channel by abusing the DNS protocol. Since DNS traffic is commonly allowed through firewalls and security devices, attackers may use it to communicate with compromised systems or exfiltrate sensitive information while blending with legitimate network traffic. In this tutorial, … Read more
Mishandling of Exceptional Conditions is a new category introduced in the OWASP Top 10:2025. It focuses on applications that fail to properly handle unexpected errors, exceptions, or abnormal conditions. Poor exception handling can expose sensitive information, cause application crashes, create security vulnerabilities, or even allow attackers to perform further attacks. Applications should always handle errors … Read more