use 2FA on all your important financial and identity accounts so your password will be insufficient to login in. protect your password manager with a very strong master password and 2FA. that will be the one and only password you have to remember.

It is very important not to reuse the same password on multiple sites. Therefore it is impossible to memorize all of your passwords and you must use a password manager. Once you use a password manager you should go all in on using completely random passwords or passphrases - it doesn't matter which as long as there is enough entropy. So pick 16 character random letters numbers and punctuation or pick 6 word random passphrases from large dictionaries. Since more current websites accept 16 characters than 30+ characters the password choice makes more sense.

This assumes that the device with the microphone is sensitive to frequencies above the hearing range. Most devices have a low-pass filter for the purpose of avoiding any input above 1/2 the sample rate of the DAC, since these will create artifacts, aliasing, and distortion. Even in the case that current devices have left out the low-pass filter, it costs pennies to add.

The signal does not have to go through an A/D converter at all. Most competently designed microphone systems have a low-pass filter before the A/D, to prevent aliasing and artifacts, and no signal whatsoever will reach the A/D.

LOL... At 300 baud, it took basically all night to download one GIF. When JPEGs and 1200 baud modems appeared, I was in heaven.

Maybe. We've heard the same phrases for Josephson junctions, magnetic bubbles, insert your favorite once-nascent technology here. There is still a big distance between demonstration and practicality.

There is a security bit in every packet that your browser can check to see if it is being used "for evil". It will be relatively easy to secure WebAssembly, at least compared to Flash and other things that came before it. https://www.ietf.org/rfc/rfc35...