https://techcrunch.com/2020/01/10/cookie-consent-tools-are-being-used-to-undermine-eu-privacy-rules-study-suggests/

Most cookie consent pop-ups served to Internet users in the European Union — ostensibly seeking permission to track people’s web activity — are likely to be flouting regional privacy laws, a new study by researchers at MIT, UCL and Aarhus University suggests.

“The results of our empirical survey of CMPs [consent management platforms] today illustrates the extent to which illegal practices prevail, with vendors of CMPs turning a blind eye to — or worse, incentivising — clearly illegal configurations of their systems,” the researchers argue, adding that: “Enforcement in this area is sorely lacking.”