I’m talking to a new ActivityPub server library that’s releasing its first alpha soon, and they’ve set up a hosted sandbox for testing. Naturally, this test instance will be unfederated because it’s just meant for demo purposes.
It did get me thinking though: Is there no sandbox version of the fediverse network out there? A kind of emulation of the real ActivityPub network, made of bot accounts, to which developers can federate their apps for testing.
What I meant to express by “a hunch based on what” is that I don’t know what the actual threat scenarios are. However, I suspect that there are several non-trivial ones. So one shouldn’t launch such a “sandbox network” on the internet without doing a careful analysis. Such an analysis can only occur once one has a firm concept of the sandbox to use.