The original exploit concern was the use of the "Viterbi Algorithm." http://www.cs.berkeley.edu/~dawnsong/papers/ssh-timing.pdf http://www.cs.berkeley.edu/~daw

The original exploit concern was the use of the "Viterbi Algorithm." http://www.cs.berkeley.edu/~dawnsong/papers/ssh-timing.pdf http://www.cs.berkeley.edu/~dawnsong/papers/ssh-timing.pdf [2001] The addition of ML has greatly improved the accuracy of audio decoding - use a silent keyboard in any insecure physical locale. https://arstechnica.com/gadgets/2023/08/type-softly-researchers-can-guess-keystrokes-by-sound-with-93-accuracy/ https://arstechnica.com/gadgets/2023/08/type-softly-research...