: You can set links to automatically deactivate after a certain time (Pro feature).
If you share a link with the key embedded (the full URL) and someone shares it, anyone with that string can access your files. There is no "revoke access" except deleting the file or moving it to a different folder. meganz links
: You can choose to export the decryption key separately from the link itself, requiring the recipient to have both to access the file. : You can set links to automatically deactivate