''Your connection is not private'' problem

[terra]

Hi everyone,

I am getting this message on most sites I am trying to visit.

Any tip on how I can get rid of that?

Thanks!

 

[terra]

Looks like that

 

[bogdanw]

In order to get any useful advice, you need to tell us which version of macOS and which browser you're using.

 

[terra]

Using OS X 10.11. and El Capitan

Thanks

 

[Antares23]

Safari is outdated on such old version of OSX.
You should consider using Chromium Legacy which is a port of recent version of Chromium (which is the open source base of Google Chrome) that is designed to run on Lion or later:
chromium-legacy

 

[za9ra22]

10.11 is El Capitan, so you haven't provided the browser you're using.

That said, 10.11 dates from 2015 - 9 years ago - and it is no longer secure. That error is basically telling you that your present browser is not able to read the site security certificate, and may not actually be able to connect to the correct https protocol.

As said, you should firstly ensure that you're using the newest functional browser, but even then, 10.11 does not have safeguards against modern security problems, so shouldn't be in routine use without very careful and informed risk management.