An exemplary method includes receiving data representative of a content instance over a network from an access device associated with a first user, encrypting the content instance in response to a command initiated by the user by way of one or more graphical user interfaces, providing a key configured to facilitate decryption of the encrypted content instance, creating at least one access rule corresponding to the encrypted content instance, transmitting data representative of the encrypted content instance to a requesting access device associated with a requesting user, receiving, from the requesting access device, data representative of a request to access the key over the network, and performing a predefined action related to the key in response to the request and in accordance with the at least one access rule.