I am using CloudTrail to track the events in our AWS environment. Went under dashboard, clicked "View full Event history", then clicked on "Download Events", then "Download as CSV".
It generated a big file and I can see all the events that occurred in the system. The problem is when I look at the generated file in MS Excel, I see the username column and/or the Access Key column are empty for so many rows. The event names for those rows are: AssumeRole, CreateGrant, CreateLogStream, RetireGrant.
Was wondering if someone could please shed some light on this and let me know who/how these events got generated. Thank you in advance