Abstract: When data is stored on a computer, or subsequently, originator preferences relating to the data are stored in a database, for example in a network. When another user subsequently makes a request for processing of the received data, or a modified copy of the data, it is determined whether the requested processing is consistent with any stored originator preferences, and the requested processing is permitted only if it is consistent with the stored originator preferences. The preferences may relate to saving, copying or retransmitting the data. The originator may be notified of any processing operations that are carried out.

Abstract: A method for retrieving a resource such as a data file includes determining an email address of a user requesting the retrieval, and checking whether a characteristic condition associated with said resource is satisfied. If the characteristic condition is not satisfied, for example if the size of the resource exceeds a threshold, a message is returned to the user indicating that said request for retrieval of said resource has been received, and the request is placed in a queue. The queue is processed on the basis of a rule, and the resource retrieved when said queue has been sufficiently processed, when the user can be notified by means of the email address that the resource has been retrieved. Also disclosed is a similar process for uploading data files in response to a request.

Abstract: A method for monitoring electronic mail messages, each mail message comprising header information and a main body, particularly for protection against virus attacks and unsolicited commercial email (UCE). The method comprises generating a summary digest of only the subject line and the message content of the main body, wherein the message content may comprise textual content and/or attached files. The generated summary digest is stored in a memory, and compared with existing summary digests stored in memory. If the number of matches exceeds a threshold value, an alert signal is raised and appropriate action initiated. A timestamp may be stored with each summary digest, together with sender/recipient details and the internet protocol (IP) address of origin, to aid detection of the originator of the message.

Abstract: When data is stored on a computer, or subsequently, originator preferences relating to the data are stored in a data-base, for example in a network. When another user subsequently makes a request for processing of the received data, or a modified copy of the data, it is determined whether the requested processing is consistent with any stored originator preferences, and the requested processing is permitted only if it is consistent with the stored originator preferences. The preferences may relate to saving, copying or retransmitting the data. The originator may be notified of any processing operations that are carried out.

Abstract: A method for monitoring electronic mail messages, each mail message comprising header information and a main body, particularly for protection against virus attacks and unsolicited commercial email (UCE). The method comprises generating a summary digest of only the subject line and the message content of the main body, wherein the message content may comprise textual content and/or attached files. The generated summary digest is stored in a memory, and compared with existing summary digests stored in memory. If the number of matches exceeds a threshold value, an alert signal is raised and appropriate action initiated. A timestamp may be stored with each summary digest, together with sender/recipient details and the internet protocol (IP) address of origin, to detection of the originator of the message.