Lambda get Modification History

Question

I noticed in the lambda console that one of my lambdas has a modification timestamp of four days ago, but I don't recall editing anything about it for much longer than that. There are no other users that should have access to modify it. How can I find details about this modification? I don't have multiple versions of my lambda, so this isn't a version issue. I want to know who/what modified it, and what modification was made.

Accepted Answer

It's probably worth checking CloudTrail in the region the function is in, with an Event source filter of lambda.amazonaws.com or a Resource name filter of the function's name. That should at least tell you what changes have been made to the function, and by whom. In some cases, you might also be able to see what has been changed in the event record.

The timestamp seems to update when any part of the Lambda configuration is changed, so it might not be a code modification.

Lambda get Modification History

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