It would be worlds less than Chrome and Edge. Windows 10 : https://www.ghacks.net/2017/04/06/windows-10-full-and-basic-telemetry-data-collection-information/ Windows 10 connects to all these. You can add them to your Windows Host File if so choose but mind these are for earlier versions of WIn10, there are many more now.: 0.0.0.0 a-0001.a-msedge.net 0.0.0.0 a.ads1.msn.com 0.0.0.0 a.ads2.msn.com 0.0.0.0 ad.doubleclick.net 0.0.0.0 adnexus.net 0.0.0.0 adnxs.com 0.0.0.0 ads.msn.com 0.0.0.0 ads1.msads.net 0.0.0.0 ads1.msn.com 0.0.0.0 az361816.vo.msecnd.net 0.0.0.0 az512334.vo.msecnd.net 0.0.0.0 ca.telemetry.microsoft.com 0.0.0.0 cache.datamart.windows.com 0.0.0.0 choice.microsoft.com 0.0.0.0 choice.microsoft.com.nsatc.net 0.0.0.0 choice.microsoft.com.nstac.net 0.0.0.0 compatexchange.cloudapp.net 0.0.0.0 corp.sts.microsoft.com 0.0.0.0 corpext.msitadfs.glbdns2.microsoft.com 0.0.0.0 cs1.wpc.v0cdn.net 0.0.0.0 db3wns2011111.wns.windows.com 0.0.0.0 df.telemetry.microsoft.com 0.0.0.0 diagnostics.support.microsoft.com 0.0.0.0 fe2.update.microsoft.com.akadns.net 0.0.0.0 fe3.delivery.dsp.mp.microsoft.com.nsatc.net 0.0.0.0 feedback.microsoft-hohm.com 0.0.0.0 feedback.search.microsoft.com 0.0.0.0 feedback.windows.com 0.0.0.0 i1.services.social.microsoft.com 0.0.0.0 i1.services.social.microsoft.com.nsatc.net 0.0.0.0 msnbot-207-46-194-33.search.msn.com 0.0.0.0 oca.telemetry.microsoft.com 0.0.0.0 oca.telemetry.microsoft.com.nsatc.net 0.0.0.0 pre.footprintpredict.com 0.0.0.0 preview.msn.com 0.0.0.0 rad.msn.com 0.0.0.0 redir.metaservices.microsoft.com 0.0.0.0 reports.wes.df.telemetry.microsoft.com 0.0.0.0 s0.2mdn.net 0.0.0.0 services.wes.df.telemetry.microsoft.com 0.0.0.0 settings-sandbox.data.microsoft.com 0.0.0.0 settings-win.data.microsoft.com 0.0.0.0 settings.data.microsof.com 0.0.0.0 sls.update.microsoft.com.akadns.net 0.0.0.0 spynet2.microsoft.com 0.0.0.0 spynetalt.microsoft.com 0.0.0.0 sqm.df.telemetry.microsoft.com 0.0.0.0 sqm.telemetry.microsoft.com 0.0.0.0 sqm.telemetry.microsoft.com.nsatc.net 0.0.0.0 ssw.live.com 0.0.0.0 statsfe1.ws.microsoft.com 0.0.0.0 statsfe2.update.microsoft.com.akadns.net 0.0.0.0 statsfe2.ws.microsoft.com 0.0.0.0 survey.watson.microsoft.com 0.0.0.0 telecommand.telemetry.microsoft.com 0.0.0.0 telecommand.telemetry.microsoft.com.nsatc.net 0.0.0.0 telemetry.appex.bing.net 0.0.0.0 telemetry.microsoft.com 0.0.0.0 telemetry.urs.microsoft.com 0.0.0.0 v10.vortex-win.data.microsoft.com 0.0.0.0 view.atdmt.com 0.0.0.0 vortex-sandbox.data.microsoft.com 0.0.0.0 vortex-win.data.microsoft.com 0.0.0.0 vortex.data.microsoft.com 0.0.0.0 watson.live.com 0.0.0.0 watson.microsoft.com 0.0.0.0 watson.ppe.telemetry.microsoft.com 0.0.0.0 watson.telemetry.microsoft.com 0.0.0.0 watson.telemetry.microsoft.com.nsatc.net 0.0.0.0 wes.df.telemetry.microsoft.com 0.0.0.0 win10.ipv6.microsoft.com There are 2 programs you can use that block hundreds of telemetry addresses that Win10 connects to https://www.safer-networking.org/spybot-anti-beacon/ https://www.oo-software.com/en/shutup10 Not even going to touch Google and Chrome together it would be worse than the above as Google makes it's money by selling it all. Firefox also depends where live as Firefox Europe goes by standards set by the EU. : Below are US. https://www.mozilla.org/en-US/privacy/ https://www.mozilla.org/en-US/privacy/principles/ https://wiki.mozilla.org/Firefox/Data_Collection And a page from Google search comparing Firefox vs Chrome : https://www.google.com/search?client=firefox-b&q=firefox+privacy+vs+chrome&sa=X&ved=0ahUKEwjfy7ac-aHcAhVozVQKHeBhAoIQ1QIImAEoBQ&biw=1874&bih=866 Please let us know if this solved your issue or if need further assistance.