Mac addresses? Under what scenario does any provider (ISP even) end up with your mac address? (Am I missing something here that I don't know about?)
Understand that your router has your mac address and in theory your ISP could end up with it by getting it there if they wanted to but don't know of cases where they legally actually do this or have any need for the info. True?
I guess, if for whatever reason Google had a MAC address of say a Chromebook in some other unrelated database. And the serial of that Chromebook was associated with your account. It's a stretch, and you have to wonder if Google would even go that far.
The other scenario I thought about was the unique browser footprint. Info in server logs that is very specific to someone's machine and the way they have it setup (screen size, os, browser and a host of other info). In certain cases the probability becomes highly likely that it can be linked to another log where your identity is known because the same footprint (not sure if that's the correct word) is in that other log.
I had this thought too - my MAC address is not likely something google have access to (not in the normal operation of a network as it's stripped at the next hop)
Understand that your router has your mac address and in theory your ISP could end up with it by getting it there if they wanted to but don't know of cases where they legally actually do this or have any need for the info. True?