Don't have Telegram yet? Try it now!
https://mrbagaimana.com/2019/01/12/video-measure-school-of-google-analytics-what-is-gtm-msr-appspot-com-and-how-can-i-get-rid-of-it/
(Video) Measure School of Google Analytics - What is gtm-msr.appspot.com and how can I get rid of it ?