Keeps asking me to sign in?

It uses polyfill.io which is no longer active and has been taken over by malicious actors.

That's where the sign in request is coming from

	▲	ehnto an hour ago \| parent [-]
		Somehow this is only the first time I have seen this vector taken advantage of with my own eyes. I remember thinking it was a stupid idea to embed third party hosted JS back when jquery and prototypejs were the duopoly of javascript. I'm surprised it took me this long to see it.