US Patent 8127365 Origination-based content protection for computer systems

Content, such as confidential information of an organization, may be protected by automatically categorizing the content. The automatic categorization may be performed by calculating a sensititiy score of the content, the sensitivity score being indicative of whether or not the content is confidential. The sensitivity score may be compared to a threshold. Metadata of the content may be provided to collaborating computers outside the computer network where the content was created. The collaborating computers may compare the metadata to received content to determine if the received content discloses confidential information described by the metadata.