corebrightnessd

System configuration utility — manages hardware, display, and secure storage settings

Manages low-level system configuration including direct hardware communication, NVRAM variable access, and display control through the SkyLight window server. Accesses Secure Enclave sealed keys via Keychain for cryptographic operations. Handles network configuration and reachability monitoring. Exposes functionality through XPC service for client applications to query and modify system state. Contacts multiple network endpoints for configuration or telemetry purposes.AI