EasyPost is responsible for securing the underlying infrastructure that supports the cloud and the services provided; while customers, acting either as data controllers or data processors, are responsible for any personal data they put in the cloud.
We strongly recommend that you never put sensitive identifying information, such as your customers' social security numbers, into free-form fields such as Shipment options. This includes when you work with our client libraries and website. Any data that you enter into an EasyPost service might get picked up for inclusion in diagnostic logs.