How Facebook Figures Out Everyone You’ve Ever Met

Shadow contact information has been a known feature of Facebook for a few years now. But most users remain unaware of its reach and power. Because shadow-profile connections happen inside Facebook’s algorithmic black box, people can’t see how deep the data-mining of their lives truly is, until an uncanny recommendation pops up.

.. Handing over address books is one of the first steps Facebook asks people to take when they initially sign up, so that they can “Find Friends.”
.. Having issued this warning, and having acknowledged that people in your address book may not necessarily want to be connected to you, Facebook will then do exactly what it warned you not to do.
.. Facebook doesn’t like, and doesn’t use, the term “shadow profiles.” It doesn’t like the term because it sounds like Facebook creates hidden profiles for people who haven’t joined the network, which Facebook says it doesn’t do. The existence of shadow contact information came to light in 2013 after Facebook admitted it had discovered and fixed “a bug.” The bug was that when a user downloaded their Facebook file, it included not just their friends’ visible contact information, but also their friends’ shadow contact information.

.. Facebook does what it can to underplay how much data it gathers through contacts, and how widely it casts its net.

.. Through the course of reporting this story, I discovered that many of my own friends had uploaded their contacts. While encouraging me to do the same, Facebook’s smartphone app told me that 272 of my friends have already done so. That’s a quarter of all my friends.

..  When Steinfeld wrote “a friend or someone you might know,” he meant anyone—any person who might at some point have labeled your phone number or email or address in their own contacts. A one-night stand from 2008, a person you got a couch from on Craiglist in 2010, a landlord from 2013: If they ever put you in their phone, or you put them in yours, Facebook could log the connection if either party were to upload their contacts.
.. That accumulation of contact data from hundreds of people means that Facebook probably knows every address you’ve ever lived at, every email address you’ve ever used, every landline and cell phone number you’ve ever been associated with, all of your nicknames, any social network profiles associated with you, all your former instant message accounts, and anything else someone might have added about you to their phone book.
As far as Facebook is concerned, none of that even counts as your own information. It belongs to the users who’ve uploaded it, and they’re the only ones with any control over it.

.. It’s what the sociologist danah boyd callsnetworked privacy”: All the people who know you and who choose to share their contacts with Facebook are making it easier for Facebook to make connections you may not want it to make—say if you’re in a profession like law, medicine, social work, or even journalism, where you might not want to be connected to people you encounter at work, because of what it could reveal about them or you, or because you may not have had a friendly encounter with them.

.. If just one person you know has contact information for both identities and gives Facebook access to it, your worlds collide. Bruce Wayne and Clark Kent would be screwed.
.. The company’s ability to perceive the threads connecting its billion-plus users around the globe led it to announce last year that it’s not six degrees that separate one person from another—it’s just three and a half.

.. The network can do contact chaining—if two different people both have an email address or phone number for you in their contact information, that indicates that they could possibly know each other, too.

.. This is how a psychiatrist’s patients were recommended to one another and may be why a man had his secret biological daughter recommended to him. (He and she would have her parents’ contact information in common.)
.. And it may explain why a non-Facebook user had his ex-wife recommended to his girlfriend. Facebook doesn’t keep profiles for non-users, but it does use their contact information to connect people.

.. “Mobile phone numbers are even better than social security numbers for identifying people,” said security technologist Bruce Schneier by email. “People give them out all the time, and they’re strongly linked to identity.”

.. the social network is getting our not-for-sharing numbers and email addresses anyway by stealing them (albeit through ‘legitimate’ means) from our friends.”

What if you don’t like Facebook having this data about you? All you need to do is find every person who’s ever gotten your contact information and uploaded it to Facebook, and then ask them one by one to go to Facebook’s contact management page and delete it.

 .. Facebook functions as a reverse phone-number look-up service; under the default settings, anyone can put your phone number into the search bar and pull up your account
.. “You can limit who can look you up on Facebook by that phone number [or email address] to ‘friends.’ This is also a signal that People You May Know uses.
.. So if a stranger uploads his address book including that phone number [or email address, it] won’t be used to suggest you to that stranger in People You May Know.”

Sean Parker unloads on Facebook “exploiting” human psychology

  • “The thought process that went into building these applications, Facebook being the first of them, … was all about: ‘How do we consume as much of your time and conscious attention as possible?‘”
  • “And that means that we need to sort of give you a little dopamine hit every once in a while, because someone liked or commented on a photo or a post or whatever. And that’s going to get you to contribute more content, and that’s going to get you … more likes and comments.”
  • “It’s a social-validation feedback loop … exactly the kind of thing that a hacker like myself would come up with, because you’re exploiting a vulnerability in human psychology.”
  • “The inventors, creators — it’s me, it’s Mark [Zuckerberg], it’s Kevin Systrom on Instagram, it’s all of these people — understood this consciously. And we did it anyway.”

“Because I’m a billionaire, I’m going to have access to better health care so … I’m going to be like 160 and I’m going to be part of this, like, class of immortal overlords. [Laughter] Because, you know the [Warren Buffett] expression about compound interest. … [G]ive us billionaires an extra hundred years and you’ll know what … wealth disparity looks like.”

Russian-Backed Facebook Accounts Staged Events Around Divisive Issues

They publicized or financed at least 60 events—on all sides of most polarizing issues—before and after the 2016 election

.. In July 2016, as outrage swelled over fatal shootings in Dallas and Minneapolis, alleged social-media agitators tied to Russia worked quickly to capitalize on the emotionally charged atmosphere.

Workers linked to a Russia-based firm organized two gatherings, both for July 10: In Dallas, a “Blue Lives Matter” rally honored the five police officers slain there on July 7; and near Minneapolis, nearly 300 people rallied in support of Philando Castile, a man fatally shot by a police officer during a traffic stop.

The events show that the Russian-linked account activity went far beyond paying for polarizing ads dropped into Facebook members’ news feeds. At least 60 rallies, protests and marches were publicized or financed by eight Russia-backed Facebook accounts from Los Angeles to Washington, D.C., according to a review by The Wall Street Journal

.. it had found 470 such accounts that it says belonged to Russians and that sought to exploit social divisions in the U.S. through provocative issue ads.

.. but the live events demonstrate how the alleged use of social media by Russian forces served as a launchpad for deeper infiltration into the American democratic process. Many rallies were sparsely attended, but some attracted news coverage, helping the accounts seem legitimate
.. People representing “Black Matters US,” one of the Russia-backed accounts, pressured Los Angeles activist Nolan Hack to plan events that would raise the account’s visibility.
..  Collectively, the eight accounts analyzed by the Journal were “liked” nearly two million times

.. Russian entities likely promoted events because the Kremlin believes protests destabilize democracies, according to Ms. Oates, who studies Russian propaganda. Event listings show how Russia-backed pages organized protests for and against the same issues. The page “Born Patriotic” planned 17 pro-Trump rallies on the same day in August 2016 while “Black Matters” hosted anti-Trump rallies after the election.

How Facebook’s Master Algorithm Powers the Social Network

Instagram engineers faced a Herculean task in early 2016. Fearing that people would miss the most important posts, Instagram’s leadership asked the engineers to transform the chronological photo feed into a curated list of posts based on users’ individual preferences.

.. However much Instagram’s engineers tweaked it, the fact that most of what powers Instagram came straight from Facebook’s News Feed shows the dominance and success of this basic engine of social media. Think of it—and the endless, modular chunks of AI that go into it—as Facebook’s master algorithm 

.. If telling us what to look at next is Facebook’s raison d’être, then the AI that enables that endless spoon-feeding of content is the company’s most important, and sometimes most controversial, intellectual property. A sorted, curated feed tuned for engagement is the product of a device that may someday be viewed by historians as a milestone on par with the steam engine.

.. Only this engine, built to capture human attention, has shown itself to be exploitable by bad actors and possibly detrimental to our democracy, even when it is functioning as advertised.

.. AI algorithms are inherently black boxes whose workings can be next to impossible to understand—even by many Facebook engineers. “If you look at all the engineers at Facebook, more than one in four are users of our AI platform,” says Mr. Candela. “But more than 70% [of those] aren’t experts.”

.. A team analyzed hundreds of thousands of posts in 10 languages, flagging offending headlines that either withheld information (“Here’s the one thing…”) or exaggerated (“…will blow your mind”). The resulting system autonomously scans links, suppressing the ones that match what it learned from the human-generated data.

.. teams add new features to Facebook’s master algorithm to “add value to social interactions.” Chief Executive Mark Zuckerberg recently said the company’s goal was to “bring the world closer together.”

However it is phrased, it is measured in the way people engage with Facebook’s apps and networks, whether that is increasing the number of posts they like or comment on, or how useful they find machine-translated posts, or how often they use M, Facebook’s Messenger-based smart assistant, Mr. Candela says.

.. The unstated assumption behind the work of Facebook’s more than 20,000 employees is that getting people to use Facebook more is a good thing. It is certainly hard to imagine a world without it, given how it has become central to the way we connect, find news and keep up with friends and family.