A Cloud Access Security Broker (CASB) is a policy enforcement point that delivers data and threat protection in the cloud, on any device, anywhere. The Bitglass multi-protocol proxy architecture with Zero-Day Core ensures protection from known and unknown data leakage risks and malware threats, on managed and unmanaged apps, as well as on managed and unmanaged devices. For managed apps, Bitglass provides zero-day support for any application, providing real-time data & threat protection, identity and visibility. No catalog or signatures required. Bitglass’ agentless reverse proxy capability leverages patent pending AJAX-VM technology to ensure application resilience. For unmanaged apps, Bitglass' patented-pending machine-learning approach automatically identifies new applications and learns application behaviors and leakage paths, allowing coaching, blocking and zero-day control for any existing or new application on the user's network.