Unsecapp.exe is a part of Windows so it was most probably already on your computer or laptop when you first purchased it. To be a bit more specific, it actually contributes to the WMI provider interface structure to receive call-backs for client applications which are running different processes.
The WMI, or Windows Management Instrumentation is used to allow software programs interact with computer user accounts, services within Windows, other already running programs, and other parts of the Windows Operating System. This is why Unsecapp.exe appears in your Task Manager when you start up your computer, or as soon as a program on your computer needs to use WMI.
As already mentioned, unsecapp.exe should be considered both safe and required. But please be aware that a virus or spyware may use a very similar process name to trick you in thinking that it is safe. Unsecapp.exe is usually located in
C:\Windows\System32\wbem\
so if you find it within a different folder on your computer, it may be an unwanted process, namely spyware, malware or a virus.
Non-system processes like unsecapp.exe originate from software you installed on your system. Since most applications store data on your hard disk and in your system's registry, it is likely that your computer has suffered fragmentation and accumulated invalid entries which can affect your PC's performance.

In Windows Task Manager, you can see what CPU, memory, disk and network utilization is causing the Microsoft Windows Management Instrumentation process. To access the Task Manager, hold down the Ctrl + Shift + Esc keys at the same time. These three buttons are located on the far left of your keyboard.

This process is considered safe. It is unlikely to pose any harm to your system. The unsecapp.exe file should be located in the folder C:\Windows\System32\wbem. Otherwise it could be a Trojan.

This process is not considered CPU intensive. However, running too many processes on your system may affect your PC’s performance. To reduce system overload, you can use the Microsoft System Configuration Utility (MSConfig) or the Windows Task Manager to manually find and disable processes that launch upon start-up.

Use the Windows Resource Monitor to find out which processes and applications write/read the most on the hard drive, send the most data to the Internet, or use the most memory. To access the Resource Monitor, press the key combination Windows key + R and then enter 'resmon'.