Enforcing Default Encryption Everywhere

Relying on people to remember to enable encryption guarantees gaps. The robust approach is to make encryption the default and block anything unencrypted.

This shifts from hoping for compliance to enforcing it structurally across the account.

Every S3 bucket now applies default encryption; objects are encrypted server-side even if the uploader does not ask.

You can set the default to SSE-KMS with a specific key, so all new objects are protected and auditable without per-upload effort.