Introspection driven by incidents for controlling infiltration

The technology disclosed teaches incident-driven and user-targeted data loss prevention that includes a CASB controlling infiltration via cloud-based services storing documents in use by organization users, by monitoring manipulation of the documents. The CASB identifies the cloud-based services that the particular user has access to and at least one document location on the cloud-based services to inspect for sensitive documents, in response to receiving an indication that user credentials have been compromised. The CASB performs deep inspection of documents identified as stored at the location and detects at least some sensitive documents. Based on the detected sensitive documents, the CASB determines an exposure for the organization due to the particular user.