[mrstubbs]

With a closed-source client, how do we know Zoom does not add itself as a un-anounced participant in a meeting??

I assume there will be analysis done in the near future by third parties, but even that analysis is not sufficient to protect against a future change or a one-off, court-mandated targeted "switch" to join a un-announced participant to a meeting. The client can be designed to be 'dumb' in this regard.