Only about your number of open tabs in the browser. 
I thought my browser was a mess, but you got me beat for sure.
I’ve edited the top post to clarify that there is nothing to be worried about and added it to the subject. It’s unfortunate these mails went out, they should have prevented that from happening. So many posts here and on duplicate topics are from people who haven’t been around for a while and weren’t prepared with any context as to why this might be happening. I’d say this was a bit of an oopsie.