Many of the current neural net voice synthesis engines are fantastic and sound extremely real. Amazon Polly for instance. I'd punch in the phrase and do some comparisons, but given the attention those logs will certainly get maybe I won't.
Given the sophistication of the attack, I wouldn’t say it’s impossible they have neural net experience. But as someone who spent a good chunk of time trying to get Dr Kleiner to sing (https://m.youtube.com/watch?v=koU3L7WBz_s) it wasn’t remotely easy a year ago to do this locally.
Using “say foo” in macOS would’ve been the most straightforward solution, I think.
Regardless, for all we know the person isn't concerned with being caught (and may currently be deceased given that possible human remains have been found).
Not virtually. Actually.
NSA et al can do - will they publicly tip that hand for this?
"virtually" also means "almost", which is what GP was using it for.
Siri, detonate this bomb in incognito mode