The most common way to compromise a device is to install malicious software, typically unsuspectingly.
Using an alternative app store means allowing software outside of the Play Store to be installed, opening yourself up to these kind of attacks.
Android is an open source operating system, but most of the software that we use on our phones isn’t.
If you’ve ever wanted to use only the open source bits, the easiest way is to replace your phone’s default firmware with a custom ROM.
Then it turned into a way to download and manage apps, track Android devices, and wipe them remotely. Google Play services run in the background on every Android device that ships with the Play Store, and this helps Google perform any number of tasks from installing apps remotely to pulling up your location.
That said, it won’t suddenly turn your device into a ghost.Saying goodbye to Google means losing out on the many Android apps that Google makes.If you choose to go a step further, like I did, and use only open source software, say goodbye to social networks, music streaming services, popular games, most navigation tools, cloud storage providers, video streaming sites, and most productivity tools.Next is what’s left after I disable all the apps that require a Google account.Altogether, fifteen apps wouldn’t let me do anything without logging in, and one of them couldn’t be disabled (Google Search).