This post is a combination of previous posts about privacy settings in mac and ios.

Safari do not track:
Safari gives users the option to enable the ‘do not track’ feature. It’s easy to enable:

• safari > preferences > privacy > Ask websites not to track me

Safari prevent cross-site tracking

A second option available is “prevent cross-site tracking”

• safari > preferences > privacy > prevent cross site tracking

I’d recommend enabling this too (it prevents cookies being accessed on domains where they weren’t set).