An apparatus, related devices and methods, having memory to store instructions; and a processor to execute the instructions, and the apparatus is configured to receive, by a remote browser isolation (RBI) proxy from a client device, a transfer request to send data to a destination application, wherein the client device is running an RBI agent and includes a Data Loss Prevention endpoint (DLPe) module, and wherein communications between the client device and the destination application are routed through the RBI proxy; receive a plurality of inputs to the client device associated with the transfer request; create a submission request that includes the plurality of inputs and metadata; send the submission request to the DLPe module; receive a response from the DLPe module, wherein the response includes an instruction to allow, to disallow, or to amend and allow the submission request; and process the submission request according to the instruction.