Patent attributes
A process is directed to the generation and processing of server identification data by a network computing provider. A client computing device transmits data identifying a server associated with a content source. The identification data can include a digital certificate signed by a third-party certificate authority, a DNS record from a third-party DNS server, etc. The network computing provider comprises one or more physical computing devices for processing the identification data received from any number of client computing devices. The network computing provider can alert the client computing device, content source, or DNS server when erroneous or potentially fraudulent identification data is detected. The network computing provider can also store the identification data and provide content sources and DNS servers with access to the identification data received from client computing devices.