A method includes identifying a trusted computer network. The method also includes monitoring a plurality of active network connections. The method further includes determining that the trusted computer network is unavailable by determining that the plurality of active network connections does not comprise the trusted computer network. The method additionally includes, in response to determining that the trusted computer network is unavailable, securing sensitive data documents. Securing the sensitive data documents includes, for each data document of a plurality of data documents, determining a respective classification of a plurality of classifications. The plurality of classifications includes a sensitive classification based on predetermined criteria. Securing the sensitive data documents also includes encrypting particular data documents having the sensitive classification.