Rakuten Drive encrypts all uploaded files and securely stores them. At the time of transmission, the files are encrypted and transmitted so that the contents of the file being transferred cannot be known by others.
Only if the sender must let the recipient know the share-link created by the sender, the recipient can access the share-link and download files. All files in share-links are also encrypted and stored to protect against external attacks and spills. Files in share-link are automatically deleted from the server once it expires.