Escrow Security Alert and Keychain Circle Notification cannot be shutdown

My iMac 27'' is running EL CAPITAN 10.11.5

CleanMyMac3 software just showed a box specifying that it could force the following software to shutdown :

"Escrow Security Alert" and "Keychain Circle Notification"

I confirmed the shutdown of both, but I had to resart the iMac

Could someone tell me what are these two processes and if there is a threat behind

Thanks and regards