information security Articles - Page 9 of 60

Understanding File Permission Management in Linux Systems

2026-06-08 by boardor

❝ Source: https://zsjie.blog.csdn.net/article/details/142900851 Recommended: https://chencoding.top:8090 ❞ Introduction In the Linux operating system, to check the permissions we have on files, we can type ls -l or ll in the terminal. The terminal will output the file information in the current path, such as file name, permission information, file owner, and group information. For example: The … Read more

Development of ECU Application Layer Model: Data Dictionary and Simulink.Parameter

2026-06-07 by boardor

Development of ECU Application Layer Model: Data Dictionary and Simulink.Signal introduces the core object of the data dictionary (.sldd) in Model-Based Design (MBD), focusing on another core object, Simulink.Parameter. <code>Simulink.Parameter is a core object class defined by the Simulink environment, playing a crucial role in the data dictionary throughout the lifecycle of model design, simulation, … Read more

High-Risk Vulnerability Alert: Linux Kernel DRM Vulnerability CVE-2025-39882

2026-06-06 by boardor

Vulnerability Description: In the Linux kernel, the following vulnerability has been fixed in drm/mediatek: a potential use-after-free issue in the for_each_child_of_node() helper function, which releases each node reference it acquires while traversing child nodes. The explicit call to of_node_put() is only required when exiting the loop prematurely, removing the recently introduced unnecessary reference count decrement … Read more

Bootloader in Embedded Systems: Why It Is Essential

2026-06-05 by boardor

We plan to explain how to design and write your own Bootloader for STM32 devices.Before we start writing code, we must first understand what a Bootloader is and why it is needed.This article will introduce you to the basic concepts of Bootloader. Bootloader Basics A Bootloader is a very important component of any operating system. … Read more

White Paper on Certification of Information Security Personnel for Industrial Control System Cybersecurity

2026-06-04 by boardor

Industrial Control System Security: The Digital Shield Protecting the Lifeblood of Industry | Fengchi Insights

2026-06-04 by boardor

The Industrial Control System (ICS) is the core “nerve center” of the modern industrial system, supporting the production operations of critical sectors such as electricity, petrochemicals, rail transportation, and intelligent manufacturing. With the rapid development of the industrial internet and intelligent manufacturing, the deep integration of industrial control systems with information networks has not only … Read more

Common Network Tools in Linux

2026-06-03 by boardor

Common Network Tools in Linux In Linux systems, network management is one of the core skills for system administrators and developers. Linux provides a rich set of network tools for diagnosing network issues, monitoring traffic, configuring interfaces, and testing connectivity. According to a survey by Stack Overflow, over 70% of Linux users frequently use network … Read more

Introduction to CAN Bus

2026-06-03 by boardor

1. What is CAN Bus CAN Bus (Controller Area Network) is a widely used communication system in vehicles and industrial equipment, designed for reliable data transmission between various Electronic Control Units (ECUs). For example, in automobiles, the CAN Bus enables quick and secure information exchange between the braking system and the engine management system. A … Read more

Ultimate Linux Firewall Showdown: Complete Configuration Guide for iptables and firewalld

2026-06-02 by boardor

Click the blue “Best Programmer” to follow me! Add a “Star“, every day at 18:03 to learn technology together! Complete Guide to Configuring iptables and firewalld Firewalls 1. Basic Concepts of Firewalls 1.1 What is a Firewall A firewall is a network security device that monitors and controls incoming and outgoing network traffic based on … Read more