What are the Differences Between DCS and PLC?

What are the Differences Between DCS and PLC?

As of now, there is no strict boundary between DCS and PLC. In the eyes of most people, large systems are referred to as DCS, while smaller systems are called PLC. Of course, this statement is not entirely incorrect, but it is also not entirely accurate. Let us redefine this concept. First, what are the … Read more

From Symbol Hijacking to Runtime Tracing in Linux: How to Function Hook, Audit Hijacking, and Function Instrumentation?

From Symbol Hijacking to Runtime Tracing in Linux: How to Function Hook, Audit Hijacking, and Function Instrumentation?

Hello, friends! Hooking using LD_PRELOAD Hooking using LD_PRELOAD Hooking using RTLD_NEXT LD_AUDIT linker listening mechanism GCC function instrumentation feature (-finstrument-functions) In this article, we will learn about Linux from symbol hijacking to runtime tracing: function hooking (LD_PRELOAD), audit stream hijacking (LD_AUDIT), and function instrumentation, as well as how to use and leverage these tools. Hooking … Read more