This chapter provides information about securing your vSphere environment for vCenter Server and ESXi. What to read next Managing CertificatesStarting with vSphere 6.7 Update 2, you can use the vSphere Automation API to manage certificates in your vSphere environment. You can not only refresh default certificates that are issued by the VMware Certificate Authority (VMCA) but also add third-party or custom-made certificates to your environment. Managing vSphere Native Key ProviderYou can use the vSphere Automation REST API to perform VMware vSphere® Native Key Provider™ operations. vSphere Trust AuthorityYou can use the vSphere Automation REST API to perform vSphere Trust Authority operations. Managing Host Hardware SecurityYou can use the vSphere Automation REST API to perform host hardware management operations.