Here, the author questions ICTs from the social construct viewpoint in direct relationship to the notions of « trust » and of « confidence ». Indeed, how can the use of ICTs in the methods of internal communications build trust within organizations ? Would certain internal values be the foundation for the building of trust ?If, on the one hand, trust appears to be the root of all collaborative work and, on the other hand, ICTs provide to an extent a framework for exchanges, can one conclude that ICTs guarantee their transparency and create interpersonal or « organisational » trust ? What mechanism(s)explain(s) the transition from individual to shared trust ?