Every single sign-on integration creates events for login activities.

You can use these events to monitor for login failures and determine if there are any security concerns to address.

Table 1. Monitoring the event queue for login failures
Event NameDescriptionRecordParameter 1Parameter 2
external.authentication.succeeded External authentication succeeded and the user accessed the instance URL. Session ID User ID of user who successfully logged in The URL the user accessed (which may be a deep link)
external.authentication.failed The single sign-on requirements are not present or are missing. Session ID The missing authentication requirements
external.authentication.failed The user does not exist in the User [sys_user] table User ID The string, "User does not exist"
external.authentication.failed The user is locked out. User ID The string, "User locked out."