I'm back from a week at my mom's house and now I'm getting ads for her toothpaste brand, the brand I've been putting in my mouth for a week. We never talked about this brand or googled it or anything like that. As a privacy tech worker, let me explain why this is happening. ๐Ÿงต
2,526
102,754
15,019
296,992
First of all, your social media apps are not listening to you. This is a conspiracy theory. It's been debunked over and over again. But frankly they don't need to because everything else you give them unthinkingly is way cheaper and way more powerful.
197
3,000
350
33,492
Your apps collect a ton of data from your phone. Your unique device ID. Your location. Your demographics. Weknowdis. Data aggregators pay to pull in data from EVERYWHERE. When I use my discount card at the grocery store? Every purchase? That's a dataset for sale.
36
1,765
64
23,799
GIF
They can match my Harris Teeter purchases to my Twitter account because I gave both those companies my email address and phone number and I agreed to all that data-sharing when I accepted those terms of service and the privacy policy.
29
1,469
44
23,449
Here's where it gets truly nuts, though. If my phone is regularly in the same GPS location as another phone, they take note of that. They start reconstructing the web of people I'm in regular contact with.
101
3,928
469
37,931
Replying to @RobertGReeve
They may also notice that you and your mum use the same IP address if you are in her wifi while you visit.

9:23 PM ยท May 25, 2021

3
1
0
29
This was always my assumption: do they get precise geo? I never grant access, but IP will match me with others.
2
0
0
9