In general, in one aspect, an interface chipset includes at least one interface to receive user commands from input devices, filters to monitor the received user commands and to copy the user commands associated with at least a subset of the input devices, and an isolated execution environment. The isolated execution environment is to provide a secure communication link between an on-line application and a remote service provider. The isolated execution environment is also to detect at least some subset of user command modifications, on-line application code modifications, and on-line application process flow modifications. The isolated execution environment is further to notify the remote service provider when a modification is detected via the secure communication link.