We take security very seriously which means all our AWS S3 buckets that are used for data source purposes are encrypted.
In order to use these buckets, you need to ensure that your S3 client settings allow for communication with an encrypted S3 bucket.
Below is a brief walkthrough of some of the most common apps.
FileZilla Pro
Further reading can be found here.
CloudBerry for Amazon S3
Cyberduck
S3 Browser
Further reading can be found here.
Transmit 5
You can find these settings in the file inspector window/sidebar.
Further reading can be found here.