Jitter is the short-term variation of a digital signal’s timing relative to its nominal value. There are two main types of jitter: random jitter and deterministic jitter. Random jitter is unbounded, meaning its value continues to increase as the measurement duration increases, and it is related to random processes such as noise. Deterministic jitter, on … Read more
Researchers from the industrial cybersecurity company Claroty revealed on January 17 that their Team82 discovered five exploitable vulnerabilities (CVE-2022-46732, CVE-2022-46660, CVE-2022-43494, CVE-2022-46331, and CVE-2022-38469) in GE Digital’s Proficy Historian server, affecting multiple critical infrastructure sectors. Threat actors could exploit these vulnerabilities to access historical data, crash devices, or execute code remotely. These vulnerabilities impact GE … Read more
Author | Green Alliance Technology With the continuous advancement of strategies such as Germany’s Industry 4.0, America’s Industrial Internet, and China’s Manufacturing 2025, along with the integrated development of new generation information technologies like the Internet of Things, cloud computing, big data, and 5G, industrial production networks are gradually interconnected with office networks, the Internet, … Read more
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1. Overview of Cybersecurity 1.1 Definition Information Security: The technical and managerial security measures established and adopted for data processing systems, protecting computer hardware, software, and data from accidental and malicious destruction, alteration, and disclosure. Cybersecurity: Prevent unauthorized users from accessing information Prevent unauthorized attempts to destroy or modify information 1.2 Characteristics of Information Security … Read more
Editor’s Note: Currently, the security issues of IoT devices are mainly limited by hardware and software. Often, if the configuration does not keep up, even if developers want to address security issues, they may feel powerless. On the software level, the built-in protection mechanisms of the system are particularly critical, especially permission-based protections. We know … Read more
1 Introduction Bluetooth technology has been widely applied in various scenarios such as personal electronics, automotive electronics, smart homes, smart cities, and industrial IoT, gaining support from over 30,000 manufacturers. The number of Bluetooth-enabled devices has reached 3.6 billion, and it is expected to rise to 5.2 billion by 2020. Bluetooth is currently one of … Read more
I don’t know when learning programming became a headache. There are always those late nights when I look up at the bright moon, wondering when I can fully grasp assembly language and become the dream of countless girls. But reality always hits hard…. There are many moments when I feel the urge to smash my … Read more
Abstract PLC (Programmable Logic Controller) is a fundamental control device in critical infrastructure, and its security is crucial for the stable operation of the entire control system. However, with the deepening integration of information technology and industrialization, as well as the advancement of Industry 4.0, the information security issues of industrial control systems have become … Read more
Author | Zhang Jiaqiu Liu Zhongjin 1 Introduction to BusyBox Components BusyBox is a commonly used component in embedded Linux, known as the “Swiss Army Knife of Embedded Linux.” It integrates commonly used UNIX commands into a single executable file. By streamlining functionality and sharing code, BusyBox retains the most commonly used features while significantly … Read more