In an information processing apparatus which divides a memory area into a plurality of boxes and manages data stored in each box, security information containing at least an editing condition and an output condition set for each box is stored. In transmitting data stored in a box to an external device, security information for the transmission target data is set based on the security information set in the box. When the security information set in the box is changed, security information set for the data corresponding to the box is also changed.