Last year, nearly 200 million people visited the website of Planned Parenthood, a nonprofit that many people turn to for very private matters like sex education, access to contraceptives, and access to abortions. What those visitors may not have known is that as soon as they opened plannedparenthood.org, some two dozen ad trackers embedded in the site alerted a slew of companies whose business is not reproductive freedom but gathering, selling, and using browsing data. The Markup ran Planned Parenthood’s website through our Blacklight tool and found 28 ad trackers and 40 third-party cookies tracking visitors, in addition to so-called…
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