Reminds me of an article I read yonks ago about a hacker sending the cops a
pic of his girlfriend’s goodies with a caption like “suck it”, only for
this super duper hacker not to realise the photo has location information
saved in the metadata.


On Thu, 23 Jan 2020 at 14:46, <adr...@halid.com.au> wrote:

>
>
> You can share your phones contact list with Facebook.
>
>
>
> What this means is that even if you have never used Facebook before, one
> of your friends could have shared your details (name, phone, email) to
> Facebook because they have chosen to provide/sync their phonebook/contact
> list with Facebook.
>
>
>
> Now Facebook knows who you are and you haven’t even signed up or logged
> into Facebook ever.
>
>
>
>
> https://www.vox.com/2016/10/1/13079770/how-facebook-people-you-may-know-algorithm-works
>
> *Does Facebook use my phone contacts to make friend recommendations?*
>
> *Yes. If you share your phone contacts with Facebook or Facebook
> Messenger, the company will use that info to recommend your contacts as
> “Friends you may know.” Timing is a factor here. That means that you may be
> more likely to see a friend recommendation from someone you recently added
> to your phone, versus a contact you’ve had for years.*
>
> *Do both parties need to be saved into each other’s phones?*
>
> *No. If someone has added your number to their contact list, you might see
> them in your suggested friends list even if you’ve never added their number
> to your own contact list. It only takes one user to trigger a
> recommendation.*
>
>
>
>
>
> What might be even more worring to you is Facebooks facial recognition AI.
>
>
>
> Imagine that someone that you don’t know takes a photo and your face
> happens to be in the background.
>
> Facebook can match all the faces in the photo, including yours, and link
> it to your Facebook profile.
>
> Essentially now they have a record of the location and exact time you were
> there because somebody else uploaded a photo.
>
>
>
>
>
> Regards
>
>
>
> Adrian Halid
>
>
>
> *From:* ozdotnet-boun...@ozdotnet.com <ozdotnet-boun...@ozdotnet.com> *On
> Behalf Of *Greg Keogh
>
>
> *Sent:* Thursday, 23 January 2020 2:33 PM
> *To:* ozDotNet <ozdotnet@ozdotnet.com>
> *Subject:* [OT] What Facebook knows
>
>
>
> Folks, most of us probably know what I'm about to say, but when you see it
> live, it's really frightening.
>
>
>
> My wife had to join Facebook for the first time ever to follow her nephew
> who is a firefighter in the ongoing disaster. She joined okay without being
> asked for a phone number. The next day she tried to get in via the Apple
> App and it demanded a mobile number. It was an absolute block until a
> number was entered, so she was compelled to. Now it gets scary...
>
>
>
> She immediately was offered hundreds of friends that included my friends,
> musicians I have played with, her old work mates in jobs going back 40
> years, extended family adult and children friends of both sides of our
> family, old workmates of mine going back to the 1980s, etc, and the list
> goes on to find obscure and tenuous links of every imaginable kind.
>
>
>
> So … given that she has never been on FB before … where did all those
> associations come from? We know they have good algorithms of course, but it
> means that FB could be used to perform a comprehensive and reliable
> analysis of the complete life of someone who isn't even a member. Imagine
> if the police, or criminals, or an oppressive government simply asked FB
> "what do you know about person X?" Even if X isn't a member, they could
> compile a fantastically detailed dossier.
>
>
>
> How much information does FB hold? Who are they sharing it with? It's
> worse than we think.
>
>
>
> *Greg K*
>

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