Many of the available document-sharing services seem to be secure because they use encryption between the user and the service -- but this protection is stripped away at the receiving end and the files are stored by the service provider, according to TeamDrive. If a hacker gained access to a cloud drive, sensitive documents being passed through the service would be exposed.

TeamDrive offers an individual service where a separate encryption key is generated for each user and stored on the client device. Therefore, TeamDrive cannot access the contents of any information stored on its systems and, if any files were stolen, a hacker would only have useless files encrypted to a 256-bit standard. The company offers a combination of cloud computing and a choice of servers, and its service runs on Linux, Windows, and Mac servers as well as iPhones, iPads, and Android smartphones.