Evil hypervisors can work out what apps are running, extract data from encrypted guests
“In a paper [PDF] presented Tuesday at the ACM Asia Conference on Computer and Communications Security in Auckland, New Zealand, computer scientists Jan Werner (UNC Chapel Hill), Joshua Mason (University of Illinois), Manos Antonakakis (Georgia Tech), Michalis Polychronakis (Stony Brook University), and Fabian Monrose (UNC Chapel Hill) detail two novel attacks that can undo the privacy of protected processor enclaves. “
https://www.theregister.co.uk/2019/07/10/amd_secure_enclave_vulnerability/