No matter what kind of virus or Trojan exists in the system, they can never completely sever their relationship with processes. Even if they use hiding techniques, traces can still be found from the processes. Therefore, checking the active processes in the system becomes the most direct way for us to detect viruses and Trojans. However, with so many processes running simultaneously in the system, which ones are normal system processes and which ones are Trojan processes? And what roles do the system processes often impersonated by viruses and Trojans play in the system? Please read this article.