Regarding the Trend Micro platinum user session agent running on the process list, it is a process of Trend Micro that makes sure that the program is up and running and protecting your device. Hope it clarifies your questions. Regards.2019-01-04
Why is Trend Micro taking up so much CPU?
An issue has been found in Trend Micro Deep Security Agent (DSA) 12.0 Update 3 (Build: 12.0. 0-682) where the Deep Security Agent Anti-Malware Service may become disabled. In addition, high CPU usage may be also observed due to a number of diagnostic files being generated when the service is disabled.2019-12-20