1.1 System Check 1. Port Check This is mainly used to check which ports are open on the server and which IP addresses are establishing connections. View all TCP connections netstat -tnlpa View UDP connections netstat -unlpa This is also used to view port connections, but it can show half-open connections initiated, such as outgoing … Read more
1. Introduction: When Motors and Valves Become “Strategic Strongholds” During the 2022 Russia-Ukraine conflict, a substation in Ukraine was precisely struck by “Industroyer2,” causing power outages for tens of thousands of households; in 2021, the Colonial Pipeline ransomware incident forced a 5,500-kilometer fuel pipeline to “shut down.” Attackers have shifted their focus from traditional IT … Read more
Strategies and Tools for Defending Against DDoS Attacks in Linux Strategies and Tools for Defending Against DDoS Attacks 1. Introduction DDoS (Distributed Denial of Service) attacks utilize a large number of controlled computing devices to simultaneously send a massive number of requests to a target server, consuming its resources or bandwidth, resulting in the server … Read more
In today’s fields of cybersecurity and software development, capturing, analyzing, and constructing network packets is a crucial technology. libtins, as a high-level, cross-platform, open-source C++ library for network packet capture and construction, provides developers with a simple, efficient, and platform- and byte-order-independent way to create network tools. Let’s delve deeper into it. 🔍 libtins: A … Read more
You are a cybersecurity expert who has just infiltrated a mysterious server, and your only tool is the Vim editor in the terminal. Your mission is to view and modify critical files without triggering any alarms, and then quietly withdraw. 🎮 Level One: Entering the Maze Scene: You have successfully connected to the target server … Read more
You have gained basic access to the server, and now you need to create covert accounts, disguise identities, and form a privileged team! Are you ready to become a master of user management? 🎯 Act 1: Reconnaissance – Viewing User Intelligence cat /etc/passwd # View all user profiles cat /etc/group # View all organizational structures … Read more
In the previous article, we briefly analyzed what alarm noise reduction in SOC platforms is. This article continues to analyze what alarm assessment in SOC platforms entails.After gathering information online, there are many explanations, as follows:1:Alarm assessment refers to the process by which security personnel or systems conduct in-depth analysis and judgment of alarm information … Read more
Join the AI Security Group for Cybersecurity, please send a message on the public account Group Cybersecurity Knowledge Base This research paper systematically explores the challenges faced by current Security Operations Centers (SOCs) and proposes a transformation path to proactive network defense through AI automation and platformization. The article points out that traditional SOCs struggle … Read more
1. Core Logic and Industry Background of System Hardening In the global cybersecurity threat landscape of 2025, APT attacks and ransomware supply chain incidents are frequent. As a standard platform for penetration testing and security research, the hardening of Kali Linux needs to establish a closed-loop system of “proactive defense – dynamic monitoring – rapid … Read more
Currently, there is an extreme shortage of cybersecurity talent in the labor market. The National Institute of Standards and Technology (NIST) has pointed out that there is a global cybersecurity talent gap of 3.4 million. In an era where digital security is more important than ever, this worsening talent shortage poses a significant risk to … Read more