SIFT™ is a browser-based metadata identification and tagging solution. It is designed to make unsearchable data searchable, and to help identify and manage sensitive organizational data. SIFT™ can be used as a stand-alone approval portal for file transfer between security enclaves, and can also be integrated seamlessly with existing document management systems. Once configured to search for the kind of data an organization considers sensitive, based on keywords or regular expressions, SIFT™ can be used to implement data transfer approval workflow, and to optionally tag documents with any discovered keywords. SIFT™ natively supports both searchable documents (e.g., MS Office) and non-searchable assets (e.g., picture, video, and scanned PDFs). SIFT™ can also be used by system administrators to scan specific network locations for spilled documents, and ships with an API that allows it to be implemented in line with document management solutions, including high assurance guards, content management systems, or email gateways. Detailed reporting provides valuable real-time audit data about document transfers, and supports integration with enterprise data visualization toolsets.