The Common CA Database (CCADB) is a repository of information about externally operated Certification Authorities (CAs) whose root and intermediate certificates are included within the products and services of CCADB Root Store Operators. Root Store Operators participate in the CCADB to improve security, transparency, and interoperability. The CCADB is used by a number of different Root Store Operators to manage their root stores, but it is run by Mozilla.