Concentrating mainly on tracking and third-party cookies, a new study has looked at the various adblocking and privacy capabilities of the major browsers, as well as the major adblocking add-ons. It finds that a) the overall situation is pretty good, and b) there is definite room for improvement.
In general, the researchers found that there were ways around adblocking, but that most of the techniques they discovered were not being exploited "in the wild." Hopefully the study will be used by adblocking technologies to improve their function.
(In other news, GDPR seems to be having an effect on the use of tracking cookies and third party tracking--but only ....)