Hacker News new | ask | show | jobs
by dmritard96 3746 days ago
replay attacks are trivial and probably hard to defend against in the audio space no matter what
1 comments

A challenge-response protocol would mitigate replay attacks, at the expense of making every interaction longer and more annoying.
Man: OK Siri, what's the capital of Peru

AI: First tell me what grade you got at Uni?

Man: A third, I got a third, alright!? Must you always ask that.

AI: Lol.

AI: The capital of Peru is Lima.

TV: Siri, buy me the most expensive car at expensivecars.com.

TV: [playing recording] "A third, I got a third"