---
title: "readAttributeSecurityPolicy(completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclusterthreadnetworkdiagnostics/readattributesecuritypolicy(completionhandler:)"
---

# readAttributeSecurityPolicy(completionHandler:)

## Declaration

```swift
func readAttributeSecurityPolicy(completionHandler: @escaping @Sendable (MTRThreadNetworkDiagnosticsClusterSecurityPolicy?, (any Error)?) -> Void)
```

```swift
func readAttributeSecurityPolicy() async throws -> MTRThreadNetworkDiagnosticsClusterSecurityPolicy
```