1. A method for processing data from a buffer memory, comprising: allowing a processor implemented in hardware to write output data, processed based on input data from at least one first location associated with a first address range of the buffer memory, to one or more first locations associated with the first address range; blocking the processor from writing output data, processed based on input data from at least one first location associated with the first address range, to one or more second locations associated with a second address range of the buffer memory; allowing a first hardware component to access the first locations and the second locations; allowing a second hardware component to access only the second locations and not the first locations, wherein the first locations are secure locations, the first address range is a secure address range, the second locations are insecure locations, and the second address range is an insecure address range; and allowing the processor to write output data, processed based on input data from at least one second location associated with the second address range, to one or more second locations associated with the second address range.