By default, the ACLs on these files grant the Administrators group permissions but Write permissions are granted only to TrustedInstaller . This ensures that an Administrator cannot accidentally delete or corrupt a critical system binary, nor can malware running with elevated privileges easily hijack system files.
No. SYSTEM has broader privileges but cannot write to files owned by TrustedInstaller without taking ownership. TrustedInstaller is more restrictive. trusted installer windows 11 best