mDNSResponderHelper

System daemon — manages network configuration and security credentials

Operates as an Apple-signed system service handling network reachability monitoring and keychain/certificate operations. Communicates via XPC to provide network configuration state and security credential access to other system processes. Maintains connections to 7 network endpoints and performs hardware-level driver communication for network devices. Includes telemetry reporting and processes multiple bundle identifiers, suggesting coordination across system frameworks.AI