---
title: defaultChangedEventMask
framework: security
role: symbol
role_heading: Type Property
path: security/seckeychaineventmask/defaultchangedeventmask
---

# defaultChangedEventMask

If the bit specified by this mask is set, your callback function is invoked when a different keychain is specified as the default.

## Declaration

```swift
static var defaultChangedEventMask: SecKeychainEventMask { get }
```