A system and method for securing data to be protected of a piece of equipment are provided. The equipment comprises: a space; at least one device for processing the data; a safety module comprising at least one controller connected to at least one memory for sensitive data, the sensitive data giving access to the data; and at least one supervision sensor. The method comprises: transmitting at least one signature through the sensor(s), to the safety module, the signature being based on a signal received by the respective sensor and giving information on the physical condition of the space; comparing in the safety module at least one of the signatures and/or a value inferred from at least one of the signatures with at least one reference value and/or at least one reference signature; limiting access to the data being based on the comparison of at least one of the signatures.