On the network layer, I don't know. But on the WWW layer, archive.today operates accounts that are used to log into websites when they are snapshotted. IIRC, the archive.today manipulates the snapshots to hide the fact that someone is logged in, but sometimes fails miserably:

https://megalodon.jp/2026-0221-0304-51/https://d914s229qk4kj...

https://archive.is/Y7z4E

The second shows volth's Github notifications. Volth was a major nix-pkgs contributor, but his Github account disappeared.

https://github.com/orgs/community/discussions/58164