Find creator of SQL Server trigger

Question

I am a SQL Server sysadmin. Someone created a trigger in a table of the database "msdb".
Now how can I find who has created that trigger?
Let me know the SQL query or some other trick.

Answer 1

The information may still be in the default trace if the trigger was created recently. The schema change report can be accessed from SSMS Object Explorer with a right-click on the instance. Select Reports-->Standard Reports-->Schema Change History.

Answer 2

In addition, check users who has ALTER permission on the table