The development of intelligent electrification in automobiles has led to an increase in the number of automotive controllers (ECUs), with CAN communication becoming the mainstream method for communication between controllers, as shown in the figure below:The vehicle control is divided into body PCAN and power ECAN, with resistors connected at both ends of the CAN … Read more
The first rays of sunlight shine into the workshop, and smart devices have already begun their new day of work. They operate quietly, transmitting data through an invisible network to distant locations. Behind all this often lies a small IoT card. Unlike mobile phone cards, it is not eye-catching, yet it silently supports the intelligent … Read more
The vulnerabilities described in this article have been fixed. Please do not conduct unauthorized penetration testing. Original source: https://sallam.gitbook.io/sec-88/write-ups/how-we-turned-a-medium-xss-into-a-high-bounty-by-bypassing-httponly-cookie Content The target application is a common website translation platform that includes team management, project management, and an AI feature module. During testing for privilege escalation and injection attacks, I discovered an interesting input field in … Read more
In modern automotive electronic systems, dozens or even hundreds of ECUs (Electronic Control Units) communicate and coordinate through bus networks such as CAN, LIN, and FlexRay. To effectively manage the operational states of these ECUs and conserve vehicle battery power, AUTOSAR (Automotive Open System Architecture) has established a comprehensive network management protocol. Among these, the … Read more
（Click the image above to register for consultation） With the widespread promotion of the Matter standard in the smart home field, the interconnectivity of devices has significantly improved. However, during the actual implementation process, issues such as insufficient support for certain Matter features and the transition of the existing BLE ecosystem still exist. Hezhong Technology … Read more
Dear friends, you must be very curious about what configuration allows the Linux system to dynamically open and close specific ports. I was also quite surprised when I saw this configuration online. Can the system really dynamically switch specific ports?The answer is yes, and this technology is known as port knocking. This is a method … Read more
Note: Swipe left on the briefing content to view the event timeline, historical background, technical details, and quick Q&A information. Mozilla to End Support for 32-bit Linux Version of Firefox in 2026 Mozilla will stop building the 32-bit Linux version of Firefox starting with version 145 in 2026; the final 32-bit regular version will be … Read more
This article shares a case of exhausting RAM space, which is not complicated. The root cause comes from using one hundred delays to obtain100 consecutivesensor signal values, and then performing a maximum value operation, resulting in a software compilation error indicating that the RAM space exceeds the allocated space.Without further ado, let’s directly share the … Read more
Introduction to VxWorks 7 User Authentication In the field of embedded systems, security is crucial, especially for real-time operating systems (RTOS) like VxWorks 7 from Wind River. As industries such as aerospace, automotive, and industrial automation increasingly rely on connected devices, implementing robust user authentication and management mechanisms is essential to prevent unauthorized access and … Read more
Having worked in the Internet of Things (IoT) industry for a long time, I have interacted with many device manufacturers. When discussing solutions, they are articulate, with cleverly designed functionalities and impressive specifications. However, some details, which are clearly visible, are often overlooked. Although IoT cards are small, they are crucial to the entire device’s … Read more