From email: how secure is GanttProject data storage

I came across your app and think it would be an amazing tool for the organization.
However, I’m concern about the confidentiality I’m putting in.
How is the confidentiality preserve if I am using the desktop version? Where do the information stored?

GanttProject doesn’t take any special security measures in addition to those provided by your operatins system and storage.

Data is stored in a file which is essentially plain text with some markup. It is as secure as is the storage drive where you write it, depending on the associated access control permissions.