What does Facebook know about you? Clearly a whole lot more than it’s comfortable letting on. Today, during testimony in front of the House Energy & Commerce committee, CEO Mark Zuckerberg was pressed by congressman Jerry McNerney on whether Facebook lets users download all their information — and he ended up appearing to contract its own cookies policy, which — if you go and actually read it — states pretty clearly that Facebook harvests users’ browsing data. See, for e.g.: We use cookies if you have a Facebook account, use the Facebook Products, including our website and apps, or visit other websites and apps that use the Facebook Products (including the Like button or other Facebook Technologies). Cookies enable Facebook to offer the Facebook Products to you and to understand the information we receive about you, including information about your use of other websites and apps, whether or not you are registered or logged in. Yet you won’t find your browsing data included in the copy of the information you can request from Facebook. Nor will you find a complete list of all the advertisers that have told Facebook they can target you with ads. Nor will you find lots of other pieces of personal information like images that Facebook knows you’re in but which were uploaded by other users, or a phone number you declined to share with it but which was uploaded anyway because one of your friends synced their contacts with its apps, thereby handing your digits over without your say so. And that’s just to name a few of the missing pieces of information that Facebook knows and holds about you — won’t tell you about if you ask it for a copy of “your information”. Here’s the key exchange — which is worth reading in full to see how carefully Zuckerberg worded his replies: McNerney: “Is there currently a place that I can download all of the Facebook information about me including the websites that I have visited?” Zuckerberg: “Yes congressman. We have a download your information tool, we’ve had it for years, you can go to it in your settings and download all of the content that you have on Facebook.” McNerney: “Well my staff, just this morning, downloaded their information and their browsing history is not in it. So are you saying that Facebook does not have browsing history?” Zuckerberg: “Congressman that would be correct. If…

Source: TechCrunch – Social Zuckerberg won’t give a straight answer on data downloads