Abstract: The invention pertains to the management and sharing of dematerialised safes, and relates to a method for managing a secured storage space (C1) or dematerialised safe associated with a first user (U1), that comprises allocating for a predetermined portion (C1i) of said space access rights to a second user (AUi) so that said predetermined portion defines a secured exchange space between said first user and said second user. This exchange space is dedicated to exchanges between the first and second users and is accessible through a secured link upon the implementation of at least one transaction between the first and second users that implies the execution of at least a first action on the content of the first portion.