I think a very effective way is to get much better control over your cookies, when you allow them to be set, under which conditions, on which sites. I use a co

I think a very effective way is to get much better control over your cookies, when you allow them to be set, under which conditions, on which sites. I use a combination of CookieBro and Umatrix on Firefox for this. Cookies are only allowed for sites I actively want to log into. For sites that require cookies to function, periodic auto-deletion via CookieBro handles those.