"[T]he paper concludes that "current private browsing implementations provide privacy against some local and Web attackers, but can be defeated by determined attackers."
This doesn't live up to the earlier claim that "The private browsing options provided by the four major Web browser publishers aren't as anonymous and secure as most users might think." What most users think about porn mode is that they can surf for porn (or birthday gifts, for that matter) without their significant other (or children) finding traces the browser history. If that's the case, most users are getting what they want. (People who are worried about TOR are a whole different category.)
This doesn't live up to the earlier claim that "The private browsing options provided by the four major Web browser publishers aren't as anonymous and secure as most users might think." What most users think about porn mode is that they can surf for porn (or birthday gifts, for that matter) without their significant other (or children) finding traces the browser history. If that's the case, most users are getting what they want. (People who are worried about TOR are a whole different category.)