Dropbox Pro users gain access to a raft of new features including automatically expiring shared links, password-protected sharing, and adjustable permissions. In recent times, Dropbox has moved away from being just a simple cloud storage platform into a cloud-based collaboration tool. Password-protected files sharing is the first line of security that's now available, but it has been bolstered by the ability to have the share automatically stop after a set period. This is something that is particularly useful for sensitive data, and is a helpful addition to the manual disabling of a shared lin