"The tagging used by ScorecardResearch is unable to identify the user visiting a page. As an example, our tags may collect such data as a timestamp, the URL, and the title of the web page.  Additionally, the data collected by ScorecardResearch is only used in an aggregated form.  In other words, the reports that are created from this data will never say that Computer 1 went from Site A to Site B to Site C.  Instead, the reports will always be based on an entire collection of different computers, meaning that the reports will contain information like “67% of the entire internet population went to Site A”, or “35% of individuals who went to Site A also went to Site B.”"

Privacy statement does not provide additional limitations on the handling of information in sensitive categories.

"The data collected through browser-level measurement is typically maintained for up to 90 days. Such data may be aggregated and used for analytical purposes indefinitely. Additionally, in certain circumstances, for instance when a specific site has asked for detailed reporting, selected anonymous records relating to that specific site may be maintained indefinitely."