Development Server Repository Security 
The models created with Visual Composer are stored in the development server repository, in which each user has an assigned workspace for private models. Only the owner has access to these models, and they are displayed in the MyModels branch. In addition, a shared workspace contains all public models, which are available for all users under the Public branch.
The development server repository is the J2EE database, which is protected by standard means of database protection.
Caution
The 
Model 
Export to File 
and Model Import from File Storyboard options enable users to export a model
as a .gml file that can be saved on any computer or server in the network. Subsequently, the file can be imported into another Storyboard by the same user or different users. The Storyboard contains no function that can determine if the model file has been corrupted or otherwise altered since it was exported.
Therefore, before importing a model file, be sure that you are familiar with the model file and its source.