Originally Posted by Vagrant Storm
Please correct me if I am wrong here...I've honestly never even seen a dial up connection or a phone modem
Wouldn't that require sound going into a modem and not a microphone?. my mic is on right now picking up all sorts of sounds...but that is fine since it can't turn any of those sounds into digital signals. It captures analog sound and then it takes a fairly large piece of software to turn those analog sound in to a sound file. The story is that the infected machines were sending "packets" back and forth...that leads me to believe it was following network protocols and that is not possible without a modem to covert the signals. That is just not possible with a simple mic and speaker combo...well, I suppose it would be possible, but it would take a full on software suite to do it...and I'd think after three years a computer security professional would have discovered that.
And I am still pretty sure that audio was never used to load data to a computer...it was magnetic tape and was read digitally...not as analog sound. A tape player would read it the same way, but then had hardware that would do the opposite of modem and turn the digital data into analog sound.
The early ones (the modem you plug the headset into and the audio cassette data devices) stuck to audible frequencies (up to 20(ish)KHz) because the equipment was designed to operate reliably in those ranges. Later modems and specialized magnetic tape storage devices were designed to accommodate higher (electronically generated) frequencies (higher frequency = faster data transmission).
A speaker just changes an electric signal to sound and mic changes it back, there may be static/interference introduced but not to the same level to obscure the main signal. Any mic that has so much interference that you can't hear your voice won't be too popular
I'm far from an expert on network protocols for sure but I'm suspecting with just two keys on my keyboard, say the "1" and "0" I could accurately represent ipv6 packet? or even shout the one's and zero's to you over a phone? Isn't any sort of (common) network protocol still just a collection of binary digits?