Hah! Comcast Outage map looks like Chicken Pox!
How often do they go down? Often enough for someone to take time to program this: http://downdetector.com/status/comcast-xfinity/map/
More on Encryption
The language is a little coarse (cursing - sorry) but this synopsis is almost spot-on! https://www.youtube.com/watch?v=zsjZ2r9Ygzw