4. The computer-implemented method of claim 1 , wherein the performing the targeted deletion comprises denying a second request to renew a time-based use of the document by the one computing device.
1. A computer-implemented method for managing data in a document management and collaboration system, comprising: under control of one or more computer systems configured with executable instructions, receiving hardware or software configuration information for one or more computing devices; uniquely identifying and tracking the one or more computing devices based on the hardware or software configuration information; receiving a first request from one computing device of the one or more computing devices, wherein the first request is for a download of a document from the document management and collaboration system to the one computing device; identifying a user associated with the first request; sending the document to the one computing device; based on the identification of the user and the tracking of the one or more computing devices, determining that the document should be deleted from a plurality of computing devices on which the user has had a user session; performing a targeted deletion of the document from the plurality of computing devices; and receiving, from the plurality of computing devices, indications of successful deletion of the document.