About Google Play Protect Service S.38.playstore.pixel3.766229181
From version S.8.playstore.pixel3.402616969:

Security starts with Google Play Protect.

Security starts at the application layer with Google Play Protect's built-in malware defense. Backed by Google's machine learning, it's always adapting and improving. Every day, Google Play Protect automatically scans all of the apps on Android phones and works to prevent the installation of harmful apps, making it the most widely deployed mob