I doubt Norton can stop input from android to my phone, but i suppose Norton might create something that would notify or stop anything coming through wi-fi to our phone we don't want.
I had not even connected my phone to Boost Mobile yet! The covid-19 Tracker got in my new phone via my personal WI-FI without permission or notification. My old phone had not updated since December and doesn't show any update or download since! Anyone who says it wasn't done covertly is not telling the truth and you must wonder who you've been believing! I saw it go in my new phone and my new phone says it has no information on the update. All for a test that's inaccurate! Are they Tracking us like China?
What app are you saying was installed without your knowledge?
If you are referring to an update to your Android OS, it is not an actual tracker. That update, along with one to iOS, only added the necessary programming API's to the operating system to allow tracker apps to do their job. Until you specifically download the app, there is no tracking being done.
See this information from xdadevelopers. https://www.xda-developers.com/google-apple-covid-19-contact-tracing-exposure-notifications-api-app-list-countries/
From the second paragraph...
Once a user downloads an app that uses the Exposure Notification API and opts in to contact tracing, their device starts generating “proximity identifiers” that are changed every 15 minutes (on average).