Facebook really is watching your every move online.
In testing out a new diagnostic tool called Abine DNT+, we noticed that Facebook has more than 200 "trackers" watching our internet activity.
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Abine defines trackers as "a request that a webpage tries to make your browser perform that will share information intended to record, profile, or share your online activity." The trackers come in the shape of cookies, Javascript, 1-pixel beacons, and Iframes.
Cookies are tiny bits of software that web pages drop onto your device that identify you anonymously but nonetheless signal useful behavior about your background interests to advertisers who might want to target you.
Critics call this spying. Advertisers call it targeting.
In an email to Business Insider, Abine privacy analyst Sarah Downey explained why users should pay more attention to trackers, and block them:
In addition to invading your privacy, these tracking requests can consume large amounts of data. And transferring lots of data takes time. Generally, the more tracking requests on a website, the slower that website loads. That's why DNT+ gets you surfing at 125% of the normal speed and with 90% of the bandwidth, compared to a browser without DNT+ running.
Equipped with this insight, an inquisitive Facebook user might be wondering why they wouldn't block all trackers and cookies alike. With a slightly harsh tone, the Facebook page cautions:
Technologies like cookies, pixel tags ("pixels"), and local storage are used to deliver, secure, and understand products, services, and ads, on and off Facebook. Your browser or device may allow you to block these technologies, but you may not be able to use some features on Facebook if you block them.
There is certainly truth to this statement, not all cookies are used for tracking. Many are simply placed in order to store information for later use. But it is the broader scope of "requests" that present the larger issue. In simple terms, Downey explained that when you navigate to a website, your browser constructs that site by communicating back and forth with the server where the site information is stored. These communications are the “requests.”
But it isn't just the website you are visiting that makes requests for information: online trackers from other companies hidden on the site do it, too. They act as third parties on your computer: you can't see them without privacy software, you probably wouldn't expect them to be present, and you probably don't intend to share your information with them.
They request information like your geographic location, which other sites you’ve visited, what you click, and your Facebook username.
In terms of what the "requests" represent, Facebook noted that they could not comment because the requests do not mean a whole lot unless you can see exactly what they are and how they are used. Facebook's entire site is run off of JavaScript and other such tags that have an array of purposes.
So, we set out to see just how much Facebook is watching our internet browsing activity. Using the Abine software, we tracked to what extent Facebook trackers increased for each new click. We started by cleaning out the browser cache and search history, and then went about using the browser like it was the start of a typical work day ...
It started off as just a normal day...
The first thing I do when I sit down at my computer in the morning is open up Facebook. Just by logging in, I could see that Facebook had 228 trackers watching my web activity.
So when DNT+ says it's blocked Facebook from tracking you 200 times, that means it's blocked 200 requests from Facebook that attempt to use the information in the request to collect information about you. Those 200 requests could have been a mix of Javascript, iframes, images, and cookies, and they could have spawned even more requests.
Note: we ran the test on various browsers, and two different machines to ensure the results were consistent.
Opening up Business Insider on a new tab.
By opening Business Insider and posting a story on Facebook there was an increase of 8 trackers. So, now Facebook had 236 trackers on my browsing activity.
Downey explained why this happens: When you visit Business Insider, and there's a Facebook button on the page, Facebook will send a request, that request comes back from Facebook with a button, which contains Javascript code that allows tracking. That piece of code then allows third parties (Facebook in this case) to run code on your machine. That code can write cookies and even make more tracking requests.
Then I opened up Bloomingdale's.com
Admittedly one of my favorite sites, I am sure to check it daily -- and, surprisingly there was no uptick in Facebook trackers.
See the rest of the story at Business Insider
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