If you are reading this then there is a chance you have a poc.txt in your s3 bucket.
This is just a little heads up to say attackers can upload and overwrite files in your s3 bucket and if you are serving up files like JS they can add an XSS or coinhive to your js.
If you login to your AWS console find the bucket please remove the public-write permission from the bucket and this will fix the issue.