Abstract: Systems for secure cloud-based collaboration over shared objects. Embodiments operate within systems in a cloud-based environment, wherein one or more servers are configured to interface with storage devices that store objects accessible by one or more users. A process receives an electronic message comprising a user request to access an object. Before providing user access to the object, the system generates a requestor-specific steganographic message that is derived from some portion of requestor identification information and/or other user attributes, and/or object storage parameters. Various forms of a requestor-specific steganographic message are applied to selected portions of the object to generate a requestor-specific protected object, which is then provided to the requestor. A web crawler can identify posted unauthorized protected object disclosures.

Abstract: A server is configured to receive, from a client, a query and context information associated with a document; obtain search results, based on the query, that identify documents relevant to the query; analyze the context information to identify content; generate first scores for a hierarchy of topics, that correspond to measures of relevance of the topics to the content; select a topic that is most relevant to the context information when the topic is associated with a greatest first score; generate second scores for the search results that correspond to measures of relevance, of the search results, to the topic; select one or more of the search results as being most relevant to the topic when the search results are associated with one or more greatest second scores; generate a search result document that includes the selected search results; and send, to a client, the search result document.

Abstract: Systems for secure cloud-based collaboration over shared objects. Embodiments operate within systems in a cloud-based environment, wherein one or more servers are configured to interface with storage devices that store objects accessible by one or more users. A process receives an electronic message comprising a user request to access an object. Before providing user access to the object, the system generates a requestor-specific steganographic message that is derived from some portion of requestor identification information and/or other user attributes, and/or object storage parameters. Various forms of a requestor-specific steganographic message are applied to selected portions of the object to generate a requestor-specific protected object, which is then provided to the requestor. A web crawler can identify posted unauthorized protected object disclosures.

Abstract: A server is configured to receive, from a client, a query and context information associated with a document; obtain search results, based on the query, that identify documents relevant to the query; analyze the context information to identify content; generate first scores for a hierarchy of topics, that correspond to measures of relevance of the topics to the content; select a topic that is most relevant to the context information when the topic is associated with a greatest first score; generate second scores for the search results that correspond to measures of relevance, of the search results, to the topic; select one or more of the search results as being most relevant to the topic when the search results are associated with one or more greatest second scores; generate a search result document that includes the selected search results; and send, to a client, the search result document.