[antonvs]

Using a password manager is an easy and useful protection against audio leaks of passwords.

But this is an example of the kind of thing the OP is talking about. You're probably not at a very realistic risk of having your password hacked via audio exfiltrated from the Ring camera at your front door. Unless it's Mossad et al who want your password.

[kragen]

Like "you're probably not at a very realistic risk of having your phone wiretapped", this is overindexing on past experience—remember that until Room 641A commenced operations in 02003 (https://en.wikipedia.org/wiki/Room_641A), you weren't, and after it did, your phone was virtually guaranteed to be wiretapped. Similarly, you aren't at a very realistic risk of having your password hacked via audio, until someone is doing this to 80% of the people in the world. As far as we know, this hasn't happened yet, but it certainly will.

[antonvs]

But again, that’s the Mossad scenario - NSA in this case. You’re essentially reinforcing the OP point. There are three threat models given in Figure 1 of the OP doc, and what you’re saying really only applies to the third.

[kragen]

No, their Mossad threat model is that the Mossad wants to kill particular people, not steal the passwords of literally every single person on Earth.