Several months ago there was a report of similar nature that mainstream Intel CPUs include a concealed (hyper-)hypervisor that appears to exist in China-produce

Several months ago there was a report of similar nature that mainstream Intel CPUs include a concealed (hyper-)hypervisor that appears to exist in China-produced chips, but absent from pre-production samples made by Intel themselves. I don't know where this all went, but it was some Russian guy who found it by accident, and he was largely dismissed as a loon and generally laughed at (though from I could tell he did know a thing or two about hypervisors, system programming and what not).