Comment by noja

It might be "secure", but almost every app is exfiltrating my personal information by using crashlytics, facebook and co.

Who needs security when the apps do it by design.

Check your firewall logs, or use a root/no-root firewall, it's frightening.

Edit: click the screenshots at https://play.google.com/store/apps/details?id=eu.faircode.ne... to see an example. Fourth picture "Access attempts"