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by cpeterso 2068 days ago
Shavar is the server from which Firefox downloads update to its Safe Browsing and Tracking Protection site lists. “Shavar” is the name of the differential update protocol Google designed and uses for Chrome Safe Browsing site list.

aus5 is the server from which Firefox downloads new Firefox updates. “aus” stands for Auto Update Service.

I’m not exactly what data is downloaded from firefox.settings.services.mozilla.com.