Unauthorized access blocked (Set Regietry Security Key)

ACTOR: C:\WINDOWS\SYSTEM32\SVCHOST.EXE
ACTOR PID: 932

Target: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_EECTRL\0000\CONTROL

TARGET PID: 0

Action: Set Regietry Security Key

Reaction: Unauthorized Access Blocked

 

 

Whats all this happening in my Norton logs?