Many internet users assume their search history isn't being tracked when they view in private mode, but Google says this isn't the case?

The search engine denies this is illegal and says it is upfront about the data it collects in this mode?

The proposed class action likely includes "millions" of Google users who since 1 June 2016 browsed the internet in private mode according to law firm Boies Schiller Flexner who filed the claim on Tuesday in federal court in San Jose, California

The search engine says the collection of search history, even in private viewing mode, helps site owners "better evaluate the performance of their content, products, marketing and more."

While private browsing has been available from Google for some time, Boies Schiller Flexner said it recently decided to represent three plaintiffs based in the US