Couldn't Giphy uniquely identify a gif when you post it to a channel, and when the reader(s) fetch said gif, fb could reconstruct the graph of channel/chat participants?
We're talking about GIFs. You know, short messages, memes, practically short text messages. They can literally extract context from those conversations, if a decent enough amount of them are used in the same place.
That would actually be quite a cool machine learning exercise.
Absolutely. Slack channel URL crossed with IPs that pulled the GIF then profile via user agents and other fingerprinting that tied it to known Facebook accounts.
They’ll know exactly who is in every single slack channel together, discord server, subreddit, etc etc.
