On Fri, Nov 1, 2013 at 1:48 PM, explanoit <explanoit.na...@explanoit.com> wrote: > As a top-posting IT generalist pleb, can someone explain why Google/Yahoo > did not already encrypt their data between DCs? > Why is my data encrypted over the internet from my computer to theirs, but > they don't encrypt the data when it goes outside their building and all the > fancy access controls they like to talk about?
Its about the CPU cost of the crypto. I was once told the number of CPUs required to do SSL on web search (which I have now forgotten) and it was a bigger number than you'd expect -- certainly hundreds. So, crypto costs money at scale basically. Cheers, Michael
