Dropbox, WeTransfer, Google Drive, and even Youtube and emails: they are all examples of cloud computing. In these applications, data and programs are no longer stored on the user’s own computer, but on servers which can be located thousands of kilometres away. The advantage: Smartphones, Tablets and Notebooks can retain more storage space if films, photos and songs disappear into the data Cloud. Thanks to the Internet, the data are quickly available from various devices at any time from anywhere. It even becomes possible for several users to work together on one dataset. The disadvantage: those responsible for data protection say that because of the external storage, users can lose control over their own data. In addition, gaps in security are frequently revealed – hackers find it easy to access the Clouds.