Re: Why do so many people confuse Google's Firebase (cloud API) with Google Services Google Firebase App Indexing (search results)?

Andrew wrote on Sat, 22 Jun 2024 18:48:30 -0000 (UTC) :

Google Services Firebase App Indexing (search related):
 <https://medium.com/android-news/firebase-app-indexing-for-personal-content-getting-personal-content-into-search-c52bfe45b3ac>
   "A note about privacy: The personal content index only exists
    on the user's device. None of the user's personal content is
    uploaded to Google servers and it only remains on the device
    while the app is installed. However, aggregated statistics
    about apps' usage of App Indexing and other system health
    information may be uploaded to Google servers."

If I didn't say it directly, Google is *definitely* the recipient of the
Firebase App Index aggregated statistics which are uploaded periodically.

The simplest way I can summarize what that cite clearly states, is this:
a. Google isn't gathering the data (which is to be found in a local search)
b. The app is gathering the data (to be found in a local search)
c. But the app isn't uploading that data (which it stored on the device)
d. The app is just storing the data (making it available to the search)
e. Google says they only upload "aggregate statistics" about that data.
f. Not the data itself.

In summary, of three things, we only fully know two of them:
a. We know what data each app is storing in the firebase app indexing db
b. We know who is uploading that index (google) and to where (google)
c. But we do not know how much of that index google is uploading

Certainly the Google Services Firebase App Indexing contains extremely
detailed accounts of your activities, down to every contact you've
connected with and every app you've used and every location you've searched
for and which songs and movies you've viewed, etc.

But Google says they only upload to their servers an "aggregate index".
Whatever that is.

Does anyone know more about what this "aggregate index" actually contains?