this post was submitted on 31 Aug 2023
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Are they talking about your IP address or the service's? Does ActivityPub even share the user's IP address with other nodes in the network? That'd be crazy, so I assume that it doesn't. Then Meta can't find out your IP address.
No this is not in the specification.
A malicious instance could in theory distribute this information but it would be non-standard. Of the 2 systems I've studied - Mastodon and Lemmy - neither do this.
In this scenario they would be talking about the IP address(es) of the services.
Thanks for the clarification. That claim seemed really off.
I've assumed that what you see publicly is basically what's synced. Obv. your instance can have a few more meta details on you, like IP, device info, possibly all the exif they've stripped from uploaded photos, but these things aren't in the ActivityPub outbox
If a Threads user posts an image, and Meta hosts it, and I scroll through my feed and see it, my client will hit their server for said image. And Meta can collect my IP.
Meta basically invented this shit.