How Advertisers Track You

Fascinating (and eye-opening) Twitter thread on how advertisers track you.

I highly recommend reading the full thread.  There's also an unrolled version if that's easier.

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. 🧵

— Robert G. Reeve (@RobertGReeve) May 25, 2021