Did #Google ever actually deploy and publicly document what they were analysing with the #PROCHLO protocol in #Chromium? It's easy to find the technical details of protocols like #RAPPOR (less so for Cobalt in #FuchsiaOS), but hard to find what they were actually being used for. Is there a good source on this or all buried in trade secrets and NDAs? (cc @hamed perhaps) #PETs #differentialPrivacy #browsers