If you are using the free version of Brainscape, your flashcards and user profiles will be visible to the public. We believe in creating an open marketplace of study materials and democratizing the world's access to great educational content (while still guaranteeing your security).
If you would like to create a fully private instance of Brainscape for your school or company, you can easily make your Class private. Only people whom you specifically invite will be able to access your flashcards, and only you -- the Class "admin" -- will be able to see students' study data.
Our site uses HTTPS secure login functionality, so none of your data would ever be visible to the outside world. And when you and your users are syncing data between our website and mobile app, all server calls are encrypted via SSL and inaccessible to potential hackers.