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Off-Facebook activity

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Re: Off-Facebook activity

#151

Post by throwawaylolx »

dannyr wrote: post #55
StavrosK wrote: post #48

Earlier quoted context omitted.

Same here. At least you can just turn it off on this page, and hopefully that will do something.

Is is too late to change my email address on Facebook? I'm assuming Facebook keeps a history of my email addresses that it can still associate it to my account. Another option is to change all my email address at these sites.

>I'm assuming Facebook keeps a history of my email addresses that it can still associate it to my account.

This is true: if you download your Facebook information file, you'll see it stores all the previous emails as well as all the previous IPs used.

Re: Off-Facebook activity

#152

Post by untog »

ocdtrekkie wrote: post #147
xfalcox wrote: post #145

Earlier quoted context omitted.

You will want to use Firefox containers in order to isolate the Facebook cookie into a container to limit this.

I use Facebook container and most of the sites reporting should've never even seen my Facebook account. However, many of these sites have my email address. I highly suspect they're correlating data without knowing my Facebook account itself.

They definitely do for advertising, at least. You can click “why am I seeing this” it’ll tell you as much.

Re: Off-Facebook activity

#153

Post by StavrosK »

cmwright wrote: post #148
StavrosK wrote: post #140

Earlier quoted context omitted.

How? It was running in a browser.

Once you've logged into facebook from the device, they likely created a device fingerprint for your device: https://en.wikipedia.org/wiki/Device_fingerprint . This would allow them to identify you even without a cookie or ad id to correlate against.

I don't think the browser fingerprint and native app fingerprint are the same, what you say sounds unlikely to me.

Re: Off-Facebook activity

#154

Post by organsnyder »

LeifCarrotson wrote: post #105
chippy wrote: post #101

Earlier quoted context omitted.

are credit cards different from debit cards in this regard? Do some credit cards not sell your transactions?

No, if it's data they can collect it's data they can sell. Can't sell cash transactions yet!

Unless you are carrying your cell phone at the time—not sure anyone is doing this yet, but I have heard of at least one chain that tracks customers' cell phone locations via triangulation.

Re: Off-Facebook activity

#155

Post by cpv »

wukerplank wrote: post #2

Wow that's creepy. It lists apps where a) I didn't use FB login/signup and b) used a different email address to sign up. How do they cross-reference that to me? Hand how can I prevent that outside of their tools (which I assume still violate my privacy)?

Some chat apps (like Viber and others) have Facebook SDK integrated in them, without any direct Facebook functionality people would use. Discovered after using NetgGuard, and seeing who is calling home, and not only home. (Why viber is making requests to graph.facebook.com anyway?)

Duolingo is a nice app for learning new languages, yet it might be using the same sdk, since it likes to call facebook.com domain.

Netflix is a good streaming service, but it has some option somewhere, which allows them to share data with others, and enabled by default. And yes, it's present in fb activity.

The list can go on...

There are developers who integrate dozens of SDKs, without any specific purpose for users, and not knowing what is happening. We need something like PrivacyBadger/ublockorigin for phones/laptops/routers/homes/cars. It's getting more than creepy.

And why would Facebook allow third-parties/businesses upload into FB info they have on their customers...

PS: analysis of how a simple menstrual tracking app is leaking data about the owner https://media.ccc.de/v/36c3-10693-no_body_s_business_but_min...

Re: Off-Facebook activity

#156

Post by mtgx »

kpozin wrote: post #12

In my profile, they managed to obtain a `PURCHASE` event from Macy's -- for an in-person purchase at a physical store . Macy's has my email address and certainly linked it to my credit card number, but this is nonetheless seriously creepy. I just tried to change my email address on Facebook and discovered that they canonicalize plus and dot variations in gmail.com addresses, and thus claim that the new email address…

Remember all of those times Facebook was telling us it doesn't "sell" our data to other companies?

Technically true, it was merely "bartering" our data (exchanging its users' data to data from other data brokers, large companies like Macy's, and many of the phone manufacturers that pre-install the Facebook app).

In other words, a distinction without a difference.

Re: Off-Facebook activity

#157

Post by propogandist »

untog wrote: post #149
xfalcox wrote: post #145

Earlier quoted context omitted.

You will want to use Firefox containers in order to isolate the Facebook cookie into a container to limit this.

Unfortunately there are no good answers for this on mobile.

if you're using android you can get add-ons for firefox. Also, you can use a firewall app like Netguard [1] to prevent apps from calling FB (graph.facebook.com)... I see most apps attempting to do this, and it's often the first thing they do.

There's similar setups on iOS, I am just not very familiar with the app names.

[1] https://github.com/M66B/NetGuard

Re: Off-Facebook activity

#158

Post by feintruled »

culturestate wrote: post #150
lprd wrote: post #129

Earlier quoted context omitted.

Same here. I had to recollect if I even signed up with Facebook. After checking my Deliveroo settings, it seems that my FB account isn't even connected. This is insane...

Do you use the same e-mail address for both Deliveroo and Facebook? If so, that could be how they matched you. Facebook lets businesses create custom retargeting audiences[1] from existing customers, and you can (obviously) include interaction data in order to segment e.g. frequent customers from occasional customers. 1. https://www.facebook.com/business/help/1472206006327390

I suppose that would explain it. I can't see what Deliveroo get out of it though, and how they might expect Facebook to have a better handle on what sort of food I would order and how often as opposed to Deliveroo themselves, who know. I wonder if they have plans for service expansion into "Deliveroo but for X" and want to see what their customers are into. Or perhaps they want to see if I am two-timing them with Just Eat!

Funny, I now remember reading a post from someone claiming that if they ordered an online grocery shop off a company that was not their usual, like magic a voucher would appear from their original company. I assumed this was coincidence, but this is the exact mechanism that such a thing could happen.

Of course this could also just be a manifestation of the trend of companies desiring data for data's sake, and a load of deliveroo managers are sitting in a meeting somewhere looking at a graph showing an intersection of people who are into retro computing and also like burritos and trying to brainstorm some strategy off such trivia.

Re: Off-Facebook activity

#159

Post by csunbird »

dannyr wrote: post #71
afandian wrote: post #69

Earlier quoted context omitted.

Do you have the option to stop using those sites or using those vendors? At least now you have more data on the externalities of using each service.

For some of them, I can stop. But some are essential. Transferwise is not connected to my FB account but is sending data to Facebook.

I am not sure about transferwise but n26 seems to send data, based on some obscure privacy policy here https://support.n26.com/en-de/get-more-out-of-n26/other/cust...

Re: Off-Facebook activity

#160

Post by stonedge »

Allegedly, I ditched my Facebook account years ago. Not just deactivated but delete, though I don’t really believe it. Is there anyway to see what’s in this (or to see if my account really is gone) without accidentally re-upping?
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