1. A computing device, comprising: a trusted environment comprising: a trusted processor; and a trusted memory for storing executable instructions, the trusted processor executing the instructions to provide a trusted computing environment that performs computing functions that could expose the computing device to a security risk; and a legacy environment comprising: a secondary processor that is physically separated from the trusted processor; and a secondary memory for storing executable instructions, the secondary processor executing the instructions to provide a legacy computing environment that manages computing functions exposed to unsecure environments; further comprising a network interface that is dedicated for the trusted environment, the network interface being inaccessible to the legacy environment; and comprising I/O devices, wherein each of the I/O devices comprises dedicated connections for the trusted environment, wherein at least a portion of the I/O devices which do not pose a security risk to a computing system are coupled with the legacy environment; wherein the legacy environment executes safe applications to generate output in a structured form, further wherein the trusted environment comprises a content insertion module that is executed by the trusted processor to insert trusted data into the structured form; wherein content downloaded from a network is stored and executed only in the legacy environment, the downloaded content being inaccessible by the trusted environment; and wherein authentication data for the computing device is stored in the trusted environment and cannot be accessed by the legacy environment.