Caveat: I haven't read the article linked in the GP, yet. (I will.) But the comments here immediately elicit this thought: How many users have a laptop that

Caveat: I haven't read the article linked in the GP, yet. (I will.) But the comments here immediately elicit this thought: How many users have a laptop that they are connecting to one or another undefined (to them) form of "public" wifi? (And/or to someone else's internal network that may be compromised.)