Wow. I just finished reading all of those, and the amount of nonsense and unsupported assertions in them is truly mind-boggling.

I'd love to see what, if any, evidence they have to back up the claims they're making.

Forget AI-generated voices for a second. How are these tools trustworthy for defending against simple low-tech hacking like recording somebody's voice and editing it together in the right pattern?

These old comical soundboards of celebrity voices are imperfect as the audio often has different volume levels and subtle background noise, but illustrates the general principle. With an intense enough effort, you can record enough audio from a person to put together a natural conversation. It takes some effort, but is not outside of the technical capabilities for even a smart 14 year old to set this up.

https://www.101soundboards.com/boards/10716-arnold-schwarzen...

Unless these financial security systems have a way to look for very subtle, unnatural gaps in the audio or the consistency of the audio quality, the voice pattern that exists could be a perfect match with this kind of tactic.

The handful of times I've had to contact Fidelity, their customer service has been exceptionally professional. The only annoying part of the process is trying to insert a long password via the phone dialpad to verify my identity. I've been given the suggestion to setup their MyVoice feature, but have resisted setting that up because it seems like there's a possibility it could be bypassed.

Is the alternative of them verifying your identify by sending a code to your phone or you telling them to call you at your phone number better (referring to SIM swapping)? Which commonly used verification method is the lesser of all evils?

Push notification to a banking app or generating a code in the app or the website are secure alternatives I’m familiar with.

Then why not just use the app to do your banking at that point?