https://wccftech.com/play-store-comeptitor-files-antitrust-complaint-against-google/

One of the biggest benefits of Android is that it doesn’t restrict you to the Play Store for your app needs. Users can select from a wide range of app stores, which are often a part of some heavily customised Android forks such as Samsung Experience and MIUI. The downside to it is that it opens up the possibility of users downloading potentially malicious apps from shady source. At times, even apps downloaded off the Play Store engage in harmful behaviour (we’re looking at you, flashlight apps that request call log permissions)

To mitigate some of the damage caused by said apps, Google put in place some measures that ensure apps don’t engage in questionable behaviour. Labelled as Play Protect, we saw the system go live last year, and things have been good so far. Play Protect has been largely successful and has kept several bad apps off the Play Store. However, Alternative app marketplace Aptoide has been flagged as malicious, and that didn’t go down well with the company. According to Bloomberg :