Found out today that we've had a rash of rogue accounts trying to join confidential calls at work. Meetings about students' 504s happen over Google Meet, for example. The accounts are always named after the person in the call like "John's Notetaker" or what have you.
Apparently, it's some kind of extension people are using that transcribes meeting notes from the call. AKA it listens and likely records the call in real time to then transcribe the call into notes. Very dumb, and also, a huge privacy issue when we're talking about 504s. There isn't a way to stop it from what I can tell because the user joining the call has the extension, and the extension detects the meeting and attempts to join as well.
Very stupid, very annoying.
If it runs as an installed program on the host, it could hook up into the audio stream as an audio sink and listen to that; I'm not sure if it's possible for a browser extension to so that, there might be an audio equalizer that could be modified, but I was more thinking something like a true 'desktop' app or service