---
title: SecTrustSettingsDomain.system
framework: security
role: symbol
role_heading: Case
path: security/sectrustsettingsdomain/system
---

# SecTrustSettingsDomain.system

System trust settings.

## Declaration

```swift
case system
```

## Discussion

Discussion These trust settings are immutable and comprise the set of trusted root certificates supplied in macOS. These settings are read-only, even by root.