Methods, systems, and computer programs encoded on computer storage medium, for identifying a virtual desktop infrastructure (VDI) that includes a plurality of components; identifying a secure boot state of each of the components; aggregating the secure boot state of each of the components to define an aggregated secure boot state of the VDI; comparing the aggregated secure boot state of the VDI with a secure boot lookup table to identify a measure of trust of the VDI; identifying access control policies for the VDI for the identified measure of trust of the VDI; and enabling access to one or more resources based on the identified access control policies for the VDI.