Methods and apparatuses for configuring products for security. In one aspect, a method of manufacturing a device, includes: determining a first executable code for the device, the first executable code being one of a plurality of different executable codes that are capable of being executed on the device, the plurality of executable codes having a same overall functionality but different operations which generates different results from same input data; and loading the first executable code into the device. In one embodiment, a connection between a data processing system and the device is established while the device is being manufactured; and the connection is used to load the first executable code and a new set of identifier information in a format compatible with the first executable code into the device. For example, the connection includes a secure authenticated channel established using an initial set of identifier information stored in the device.