Comment by aemreunal

Can't recommend Little Snitch enough, been using it for 7-8 years now. Extremely useful to prevent any unencrypted connections on wifi you don't trust (which I also used to prevent unencrypted connections when I'm in countries with internet censorship) and for peace-of-mind that some random application won't try to exfil data.

Automatic switching between profiles based on connection type (wifi, different VPN servers, etc.) is cherry on the top.