# Enhanced Security Visibility with Signup/Signin Events in Audit Trail

> Signup and signin events now included in audit trail for improved security monitoring. Fixed trace explorer display issue with child spans and parent traces.

Source: https://last9.io/changelog/enhanced-security-visibility-with-signup-signin-events-in-audit-trail/

### Improvements

- [**Audit Trail**](https://app.last9.io/settings/audit-trail): Signup and signin events are now included in the audit trail, providing more comprehensive security monitoring

### Fixes

- [**Traces Explorer**](https://app.last9.io/traces)**:** Child span shows in distribution heatmap but zooming into it would not show the parent trace in results table due to a mismatch in timestamp and heatmap bucket