“Last week, I ran an ad on Facebook that was targeted at a computer science professor named Alan Mislove. Mislove studies how privacy works on social networks and had a theory that Facebook is letting advertisers reach users with contact information collected in surprising ways,” Kashmir Hill writes for Gizmodo. “I was helping him test the theory by targeting him in a way Facebook had previously told me wouldn’t work. I directed the ad to display to a Facebook account connected to the landline number for Alan Mislove’s office, a number Mislove has never provided to Facebook. He saw the ad within hours.”

“You might assume that you could go to your Facebook profile and look at your ‘contact and basic info’ page to see what email addresses and phone numbers are associated with your account, and thus what advertisers can use to target you,” Hill writes. “But as is so often the case with this highly efficient data-miner posing as a way to keep in contact with your friends, it’s going about it in a less transparent and more invasive way.”

“Facebook is not content to use the contact information you willingly put into your Facebook profile for advertising. It is also using contact information you handed over for security purposes and contact information you didn’t hand over at all, but that was collected from other people’s contact books, a hidden layer of details Facebook has about you that I’ve come to call ‘shadow contact information,'” Hill writes. “Facebook is not upfront about this practice. In fact, when I asked its PR team last year whether it was using shadow contact information for ads, they denied it… It took academic researchers performing tests for months to unearth the truth. ”

Read more in the full article here.

MacDailyNews Take: Facebook abuses their users suckers for profit.

#DeleteFacebook

As we’ve written previously, “If you trust Mark Zuckerberg to be the keeper of your photos, contacts, political views, religious beliefs, etc., you’re batshit insane.”

Instant messages sent by Mark Zuckerberg during Facebook’s early days, reported by Business Insider, May 13, 2010:

Zuckerberg: Yeah so if you ever need info about anyone at Harvard
Zuckerberg: Just ask
Zuckerberg: I have over 4,000 emails, pictures, addresses, SNS
[Redacted Friend’s Name]: What? How’d you manage that one?
Zuckerberg: People just submitted it.
Zuckerberg: I don’t know why.
Zuckerberg: They “trust me”
Zuckerberg: Dumb fucks

We use FaceBook as an RSS feed. Our CMS automatically reposts our article headlines and links them back to our website. That is our only interaction with Facebook and has been our only interaction with Facebook for years. We deleted our personal accounts [which we opened only so we could understand the Facebook phenomenon] many years ago.

If you want to share photos and videos with friends, text them using Apple’s end-to-end encrypted iMessage service. You need to control your social networking, not cede it to a gatekeeper like Facebook. – MacDailyNews, March 19, 2018

SEE ALSO:
42% of U.S. users have ‘taken a break’ from Facebook; 28% have deleted the Facebook app in the past year – September 5, 2018
Mark Zuckerberg loses $16 billion in record Facebook fall – July 26, 2018
Facebook stock plunges as users vanish – July 25, 2018
Apple highlights user privacy as Facebook exec steps down – June 14, 2018
The 18 things you may not realize Facebook knows about you: Firm reveals the extent of its spying in a 454-page document to U.S. Congress – June 12, 2018
Facebook confirms sharing users’ personal data with Chinese companies – June 6, 2018
Apple’s macOS Mojave removes integration with third-party internet accounts like Facebook – June 6, 2018
Apple borks Facebook’s pervasive personal data-harvesting operation – June 5, 2018
Apple requested ‘zero’ personal data in deals with Facebook – CEO Tim Cook – June 5, 2018
Facebook CEO blasts Apple’s latest privacy protections as ‘cute virtue signaling’ – June 5, 2018

[Attribution: Daring Fireball. Thanks to MacDailyNews Reader “Fred Mertz” for the heads up.]