SSO is offered at the "Business" plan level. So I guess the question would be how many of the stolen accounts were for users at a lower plan level but were also controlled by espionage-worthy companies.
You can authenticate with Zoom using your existing SSO solution, not the other way around. When using SSO the Zoom account wouldn't have a password at all.
Exactly. I'm surprised there are accounts from large companies that must have some sort of SSO with MFA solution. Are they not using it with Zoom? That's a no brainer