Private: it connects to Google servers for "safe browsing" and was pushing hard for dns over http to circumvent the user supplied name server.

Security: as soon as it starts it connects to e100.net.

Configurable: say what ? (configurability died with the XUL).

I only use it as a Chrome replacement, when webpages don't play nice in PaleMoon or Seamonkey.

I need to set up a PiHole to make it behave but a minicomputer with ethernet interfaces and a resonable price is hard to find.