information security Articles

A Review of Research on Industrial Control System Security from Northwestern Polytechnical University

2026-07-18 by boardor

Cite this article JIN Zengwang, JIANG Lingyang, DING Junyi, et al. A Review of Research on Industrial Control System Security [J]. Netinfo Security, 2025, 25(3): 341-363. Background Introduction Industrial Control Systems (ICS) are widely used in industrial and critical infrastructure sectors, encompassing various control systems that play a crucial role in modern industrial production. Industrial … Read more

API Gateway: The Traffic Hub and Governance Core of Microservices Architecture

2026-07-18 by boardor

Introduction In the wave of digital transformation, microservices architecture has become the preferred model for enterprises to build resilient and scalable systems. However, when hundreds of services are scattered across a complex network, how to manage traffic uniformly, ensure security, and achieve observability becomes a key challenge in architectural design. The API gateway, as the … Read more

Introduction to Emergency Response Backdoor Investigation (Linux Edition)

2026-07-17 by boardor

1. Common Backdoors Classification of Common Backdoor Types: Type Platform Characteristics Account Backdoor Linux/Windows Creates hidden users or escalates privileges Scheduled Task Backdoor Linux/Windows Uses cron / Task Scheduler to execute malicious programs Startup Item Backdoor Windows/Linux Writes to startup items for persistence Dynamic Link Library Hijacking Linux/Windows LD_PRELOAD / DLL injection Process Injection Backdoor … Read more

Linux Basics: File Permissions and Access Control

2026-07-16 by boardor

Introduction In the world of Linux, everything is a file. From ordinary documents to system devices and process interfaces, all exist in the form of files. To ensure system security and reliability, strict permission control must be enforced on these files. Today, we will delve into understanding the Linux file system’s permission model, how permissions … Read more

A Beginner’s Guide to Automotive Embedded Systems

2026-07-14 by boardor

IntroductionWhen we sit in a modern car and press the start button, the dashboard lights up with colorful animations, the central display mirrors the rich features of our smartphones, and the driving assistance systems silently protect our safety. Have you ever wondered what technology supports this seamless experience? The answer lies in the mysterious world … Read more

Smart Access Control Solution Based on AI MCU M55M1

2026-07-14 by boardor

Smart Access Control Solution Based on AI MCU M55M1 Application Background Traditional smart access control systems primarily achieve security protection through technologies such as biometric recognition, alarm linkage, and real-time monitoring. They are widely used in factories, financial institutions, medical facilities, public safety areas, commercial venues, and residential areas. However, these solutions have the following … Read more

Cybersecurity Classroom | What to Do About Information Leakage? Encryption Algorithms to the Rescue!

2026-07-14 by boardor

Cybersecurity Information Encryption FUTURE The Internet is a magical network that tightly weaves each of us together. It is this network that makes our lives so convenient. We can draw the knowledge we need from the Internet, truly realizing the saying, “You can know the world without leaving your home.” However, alongside the convenience brought … Read more

Differences and Implementation Principles of HTTP and HTTPS (Examples)

2026-07-14 by boardor

Core Differences and Implementation Principles of HTTP and HTTPS including technical details, parameter comparisons, and examples. 1. Core Differences Comparison Table Feature HTTP HTTPS Protocol Nature Hypertext Transfer Protocol (Plaintext Transmission) HTTP over SSL/TLS (Encrypted Transmission) Default Port 80 443 Transmission Security Data is exposed (can be eavesdropped/tampered) AES-256 and other encryptions (prevents man-in-the-middle attacks) … Read more

Installing fail2ban to Protect Linux Servers

2026-07-14 by boardor

Word count: 817, reading time approximately 5 minutes Recently, there have been constant attempts to illegally log into the server, with thousands of login attempts occurring daily. Therefore, I installed fail2ban on the server and will document the installation and configuration process for future reference. fail2ban scans the log files such as /var/log/auth.log (for Ubuntu) … Read more