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 Most programmers have an intimate understanding of CPUs and sequential programming because they grow up writing code for the CPU, but many are less familiar with the inner workings of GPUs and what makes them so special. Over the past decade, GPUs have become incredibly important because of their pervasive use in deep learning. Today, it is essential for every software engineer to possess a basic understanding of how they work. My goal with this article is to give you that background. read more. ..

  Python’s Rich package is a tool kit that helps you generate beautifully formatted and highlighted text in the console. More broadly, it allows you to build an attractive text-based user interface (TUI). Why would you choose a TUI over a graphical user interface, or GUI? Sometimes a text display feels more appropriate. Why use a full-blown GUI for a simple application, when an elegant text interface will do? It can be refreshing to work with plain text. Text works in almost any hardware environment, even on an SSH terminal or a single-board computer display. And many applications don’t need the complexity of a full graphical windowing system. read more...

 Many Linux distributions use systemd to manage the system's services (or daemons), for example to automatically start certain services in the correct order when the system boots. Writing a systemd service in Python turns out to be easy, but the complexity of systemd can be daunting at first. This tutorial is intended to get you started. When you feel lost or need the gritty details, head over to the systemd documentation, which is pretty extensive. However, the docs are distributed over several pages, and finding what you're looking for isn't always easy. A good place to look up a particular systemd detail is systemd.directives, which lists all the configuration options, command line parameters, etc., and links to their documentation. continue reading...

1-  Untersuche die aktuelle Bedrohungslage im Cyberraum deines Landes.  Bewerte die Schwachstellen und Herausforderungen im Bereich der Cybersicherheit,  insbesondere im Hinblick auf Kritische Infrastrukturen. - Die Zahl der bekannten Schwachstellen in Software-Produkten ist im Jahr 2021 um zehn Prozent gestiegen, mehr als die Hälfte davon waren hoch oder kritisch. - Die häufigsten Cyberangriffe auf Deutschland waren Ransomware, Phishing, DDoS und Spionage. - Die am stärksten betroffenen Sektoren waren Gesundheit, Verwaltung, Energie und Bildung. - Die wirtschaftlichen Schäden durch Cyber-Vorfälle werden auf mehrere Milliarden Euro pro Jahr geschätzt. - Die Cybersicherheitsbewusstsein in der Bevölkerung und in Unternehmen ist noch verbesserungswürdig. - Die Zusammenarbeit zwischen staatlichen und privaten Akteuren sowie internationalen Partnern wurde verstärkt, insbesondere durch das IT-Sicherheitsgesetz 2.0. Wenn Sie mehr Details erfahren möchten, können Sie die folgenden Links besuch

 Schwachstellen-Scanning: Bedeutung und Prozess Schwachstellen-Scanning ist ein kritischer Schritt in der Informationssicherheit, der dazu dient, potenzielle Sicherheitslücken in Computersystemen, Netzwerken und Anwendungen zu identifizieren. Dieser Prozess ermöglicht es Organisationen, ihre digitalen Assets vor Angriffen und Datenlecks zu schützen, indem sie bekannte Schwachstellen identifizieren und beheben, bevor Angreifer diese ausnutzen können. Bedeutung von Schwachstellen-Scanning: 1. Risikominderung: Durch das regelmäßige Scannen von Systemen können Schwachstellen frühzeitig erkannt und behoben werden, um das Risiko von Sicherheitsverletzungen zu minimieren. 2. Compliance: Viele branchenspezifische Vorschriften und Standards erfordern regelmäßige Schwachstellen-Scans, um sicherzustellen, dass Organisationen die erforderlichen Sicherheitsstandards einhalten. 3. Kostenersparnis: Die Behebung von Schwachstellen, bevor sie ausgenutzt werden, ist kostengünstiger als die Bewältigung d

Scapy is a powerful and flexible Python-based interactive packet manipulation tool and network protocol scanner. It allows you to craft, send, receive, and manipulate network packets at a low level. Scapy is often used for network analysis, testing, and penetration testing, as it provides the capability to create custom packets and interact with network protocols in a way that is not easily achievable with standard networking libraries. Key features of Scapy include: 1. **Packet Creation and Manipulation:** Scapy allows you to create and customize network packets from scratch. You can define various packet fields, headers, and payloads to craft packets tailored for specific purposes. 2. **Packet Sending and Receiving:** Scapy enables you to send and receive packets over a network interface. You can send crafted packets to a target and capture packets from the network, which is useful for analyzing network traffic. 3. **Packet Sniffing:** Scapy can capture and display live network traff

When you’re executing Python code, the standard Python shell that comes with your Python installation is a natural tool to use. However, as you progress in your coding journey, you might find yourself seeking more powerful functionalities than the standard REPL offers. Luckily, IPython offers an enhanced version of interactive Python that can supercharge your capabilities. Using the IPython shell is a fast way of learning Python and executing code without the need for a full-fledged integrated development environment (IDE) , such as PyCharm . IPython adds great features to the Python experience with its magic commands , which the standard Python shell lacks. These can help you complete tasks more quickly. In this tutorial , you’ll: Learn the major aspects and functionality of the IPython shell Write and execute code in IPython Integrate IPython in your Python scripts Use IPython’s magic commands in your coding sessions Learn how to save your sessions persistently in a Py

Introduction: In the realm of ethical hacking and penetration testing, Enum4linux stands as a powerful tool for gathering information and enumerating data in Windows environments. This article delves into Enum4linux, highlighting its features, benefits, and best practices, while showcasing essential commands to maximize its effectiveness. Understanding Enum4linux: Enum4linux is an open-source tool specifically designed for enumerating Windows and Samba systems. It empowers penetration testers and security professionals by extracting valuable information, aiding in vulnerability assessment, privilege escalation, and reconnaissance efforts. Key Features and Benefits: 1. User Enumeration: Command: `enum4linux -U <target_IP>` This command enumerates user accounts on the target Windows system, providing insights into available accounts, user IDs, full names, and group memberships. Understanding user accounts assists in assessing the potential attack surface and identifying weak point

Nmap is the most popular free security scanner developed by Gordon Lyon (f.f. Fyodor Vaskovich). The first version of Nmapa was published on October 1, 1997, in the online magazine, Phrack. For those interested in the beginnings of this scanner, here is a full article that shows the capabilities and source code of the first version of Nmap:  The Art of Port Scanning . At the time of writing this text, the latest version of Nmap is 7.70. This version is equipped with 588 NSM scripts (Nmap Scripting Engine), which, along with a huge number of standard scanning options, give the opportunity to examine more carefully the hosts we are interested in. NSE can be used, among others, to more accurately detect the version of a given service, break usernames and passwords, detect and use known vulnerabilities, and even detect existing back gates left by the attacker and  fuzzing . A list of all available scripts with descriptions is published at  https://nmap.org/nsedoc/ . Alternatively, to get a

The Swiss Army Knife for Networking. In the realm of networking tools, few are as versatile and powerful as Netcat (or `nc`). Netcat is often dubbed the "Swiss Army Knife for Networking" due to its ability to perform a wide range of network-related tasks. It serves as a feature-rich utility that enables users to establish connections, send and receive data, and act as a network server or client. Let's dive into the features and usage of Netcat.   Basic Netcat Features: 1. **Port Scanning**: Netcat can be used to scan ports on a remote host to determine which ports are open and accepting connections. This feature is particularly useful for network administrators and security professionals. 2. **Data Transfer**: Netcat allows for bidirectional data transfer between network hosts. It can be used to send and receive files, stream data, or even create basic chat applications. 3. **Network Proxy**: Netcat can act as a simple network proxy, allowing you to relay connections betw

Ask questions to your documents without an internet connection, using the power of LLMs. 100% private, no data leaves your execution environment at any point. You can ingest documents and ask questions without an internet connection! Built with  LangChain  and  GPT4All  and  LlamaCpp . Read more…

Introduction: In the realm of network exploration and security auditing, Nmap stands as an invaluable tool. Nmap, short for "Network Mapper," is an open-source and versatile network scanning tool renowned for its flexibility, efficiency, and vast array of features. In this article, we will delve into the fundamentals of Nmap, explore its functionalities, and discuss how it can be utilized to scan for vulnerabilities in target systems. Understanding Nmap: Nmap is a command-line utility that facilitates network exploration and security auditing. It allows you to discover hosts, services, open ports, and gain insights into the network topology. Nmap employs a variety of scanning techniques, including TCP, UDP, SYN, and ICMP, to gather information about target systems. It provides a wealth of information that helps administrators and security professionals understand their network's configuration and potential vulnerabilities. Getting Started with Nmap: To begin using Nmap, y

Penetration testing, or pentesting, is a crucial part of securing any organization's IT infrastructure. It involves simulating an attack on a system or network to identify vulnerabilities that attackers could exploit to gain unauthorized access. Penetration testers use various methodologies to perform these tests and produce actionable reports to help organizations improve their security posture. In this article, we'll explore some of the most popular methodologies used by penetration testers.  1. Open-Source Security Testing Methodology Manual (OSSTMM) The OSSTMM is a well-known and widely used methodology that provides a comprehensive framework for performing security testing. It covers various aspects of security testing, including network, physical, wireless, and web application testing. The methodology follows a logical sequence of steps, starting with information gathering and reconnaissance, vulnerability identification, and exploitation. It also includes a comprehensive

Nmap is widely known for its famous port mapping capabilities — we love it, and even included it in our best port scanners article a few months ago. Still, it would be quite unfair to reduce Nmap to nothing more than a "network mapper" or "port scanner." When we analyzed the top vulnerability scanning tools available, Nmap wasn't mentioned among them; it isn't dedicated to those specific tasks but to the entire mapping and reconnaissance process. However, that doesn't mean it doesn't offer some great features when it comes to vulnerability scanning. Before we jump into the fun stuff, remember you can also take a look into our Nmap Cheat Sheet guide for Nmap vulnerability scanning tips and tricks. read more...

Once upon a time we had legacy GRUB, the Grand Unified Linux Bootloader version 0.97. Legacy GRUB had many virtues, but it became old and its developers did yearn for more functionality, and thus did GRUB 2 come into the world. GRUB 2 is a major rewrite with several significant differences. It boots removable media, and can be configured with an option to enter your system BIOS. It’s more complicated to configure with all kinds of scripts to wade through, and instead of having a nice fairly simple /boot/grub/menu.lst file with all configurations in one place, the default is /boot/grub/grub.cfg. Which you don’t edit directly, oh no, for this is not for mere humans to touch, but only other scripts. We lowly humans may edit /etc/default/grub, which controls mainly the appearance of the GRUB menu. We may also edit the scripts in /etc/grub.d/. These are the scripts that boot your operating systems, control external applications such as memtest and os_prober, and theming./boot/grub/grub.cfg

In this Python Programming video, we will be learning how to simulate the Powerball lottery using Python. I have seen several lottery simulations online, but not many of them go in-depth to calculate all of the possible combinations. Here, we will create a simulation that goes through every win condition and simulates the lottery in the way it is played in a real-life situation. Let's get started ...

With more and more businesses focusing on making decisions by understanding their data, the usage of Google Spreadsheets has increased enormously. Did you get stuck formatting heavy data to make decisions? Wondering what exactly are the Google Sheets formulas you need to implement on this data to make it crisp and understandable? For becoming a pro in the world of google sheets, you really need to know the backbone and the basic formulae before you jump onto advance hacks. If you’re a beginner and struggling with lumps of data, this is the right place to understand the basic functionalities of a Google Spreadsheet. We’ve written down simple and 20 most important and Google Spreadsheet functions to make your life easy! After reading this blog, you’ll be ready to implement these formulae right away! Here are the most useful and must know Google spreadsheets formulas.

Streaming tweets from the Twitter API v1.1 First let's cover streaming tweets from Twitter. You're going to need a Twitter dev account. Sometimes Twitter uses dev.twitter.com to advertise various things they expect devs to be interested in. The problem is they sometimes make it hard to get to where you want to be. Just in case they've done this and the video's method isn't available, here's the link: Twitter Apps Next, make a new application, filling in your name, description, website, agree to their terms, do the captcha, and create the application.

You all must have worked with Excel at some time in your life and must have felt the need for automating some repetitive or tedious task. Don’t worry in this tutorial we are going to learn about how to work with Excel using Python, or automating Excel using Python. We will be covering this with the help of the Openpyxl module.. read more

You have finished your calculations and now you are about to present your results? Well built Excel models usually separate the calculations from the results. Therefore “Paste Links” might be helpful for you, especially when your colleagues should not mess your data source. This article describes how to paste links to cells instead of values and the next steps for also applying formatting with just a few klicks (or better: key strokes…).