Cause A friend’s company encountered a cryptocurrency mining virus incident and asked me to help investigate. Intrusion Analysis Basic Information Check When I logged into the server for inspection, the top command did not show any abnormal processes: However, I found an unusual cron job in crontab: By accessing the URL in the cron job, … Read more
Author | The Agile Crafter Planning | Tian Xiaoxu Docker is a platform for software developers and system administrators to build, run, and share applications with containers. A container is a process running in an isolated environment, operating on its own file system, which is built using a Docker image. The image contains everything needed … Read more
We believe that through the previous articles, everyone has gained some understanding of the architecture of Weibo’s DCP system. Today, we will discuss some practical experiences in image distribution in Weibo’s mixed cloud. Due to the characteristics of Weibo’s business, we often face traffic that is several times the usual peak, such as major news … Read more
AuthorForum Account: gxkyrftx 0 Introduction I am a student, about to graduate. In my spare time, I deployed some honeypots on the internal servers of the campus network and found many interesting things. Here’s a record of one of them. 1 Honeypot Alerts When I regularly opened the honeypot page, I saw several alert messages. … Read more
Follow the public account, Java dry goodsDelivered on time Author: huashiou Source: segmentfault.com/a/1190000019462392 1. Background of Docker In common development and project scenarios, the following situations are prevalent: Personal Development EnvironmentTo do big data related projects, you need to install a CDH cluster. The common practice is to set up 3 virtual machines corresponding to … Read more
As machine learning and embedded systems become increasingly important in today’s society, many people are beginning to explore the use of machine learning in embedded systems. This approach can overcome many challenges that may arise when using traditional machine learning. This article will introduce some advantages of this approach. Cost Savings Bring New Opportunities Many … Read more
Choosing a suitable embedded operating system can consider the following factors: The first is the application. If the embedded device you want to develop is closely related to network applications or is a network device, then you should choose embedded Linux or uCLinux, rather than uC/OS-II. The second is real-time performance. There is no absolute … Read more
This article will explore the system characteristics we should consider when choosing an operating system. Then, in the next article, we will discuss when it is most suitable to use each type of operating system. Embedded system developers today can choose from a wide range of operating systems. Of course, the most straightforward operating system … Read more
On March 31, ZhiXin Company’s independently developed embedded operating system – Hub 4.0 (hereinafter referred to as “Hub 4.0”) successfully passed the certification by a domestic authoritative testing organization – the Ministry of Industry and Information Technology’s China Electronics Information Industry Development Research Institute, with a kernel code autonomy rate of 100%, marking a major … Read more
Question 1: How is the code in FLASH executed? For example, where is the PC pointer set and by whom? Taking ARM as an example: Microcontrollers such as ARM Cortex-M3/4 (like STM32, etc.): The code for this type of microcontroller runs directly in NOR flash, and the Cortex core can execute it directly without needing … Read more