Disclosed embodiments relate to systems and methods for securely provisioning sensitive data elements to virtualized execution instances. The techniques may include: identifying a request to provision a new virtualized execution instance; determining, in association with the request, that the new virtualized execution instance will require a prohibited data element in order to communicate with a target network resource; without providing the new virtualized execution instance the prohibited data element, registering the new virtualized execution instance; identifying a request from the new virtualized execution instance to communicate with the target network resource: performing a verification process for the request to communicate with the target network resource; and conditional on the verification process, provisioning the prohibited data element to the new virtualized execution instance.