In this work, we define the concept of an active security management in a distributed system, with Hierarchical Petri nets modelling of active product's behaviour. The target application is dedicated to security management of hazardous products but the concept is extensible to other application areas. We proposed an active product's behaviour model represented by hierarchical coloured Petri nets. This hierarchy includes sub-models where each one allows displaying the evolution of every state of the active product (registration, configuration, surveillance and communication and internal surveillance). With Petri Nets, we have verified the consistency and non-blocking states of our model. Cooperation between active products is provided by exchange of messages in order to manage and control dynamically in real-time the global active security level. The proposed Active Product model will help in future steps of our work to study by large simulation the influence of the communication network on the system functioning (bounded time, messages loss, …). The proposed approach is very promising for the study and analysis of distributed system using the communicating object’s approach or active product concept.