Unknown mail in Firebase authentication users list : hack ?

[Patrice Pistone]

Hi,

my app is currently in closed alpha state in play store.

I am using Firebare authentification as the login system. Google sign is enabled.

I discovered today that an unknown user

XXXXX...@gmail.com (XXXX is a name)

is registered into my system. 

As the APK is not available, is there a way to explain that  ?

Thanks for your help

[Sam Stern]

Hi Patrice,

I've heard of users appearing like this after an APK is uploaded to the Play Store.  The Play Store does both automated and manual app testing, so I would guess this is one of their accounts.

- Sam

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