I noticed a recent error log e-mail showed that one of my intranet app's users had, for our non-FQDN, never-GA-using intranet app, a standard _ga
cookie in addition to my app's normal cookie on the domain myapp
. How could it have gotten there?
(I.e. shouldn't that require me to include some Analytics script of some kind? How can they put a cookie on my domain without me serving up any of their code? Isn't this some kind of security breach, when I never use Google Analytics?)
The only thing I can think of that might be related is we had a few users who would be redirected to a Google search for "myapp" when they would write myapp
in the address bar, after Firefox changed the default way this was handled around version 32 or so. But how that would then allow GA to send a cookie for our private non-internet-accessible domain is what I don't understand, because I thought that was not allowed.