Earlier quoted context omitted.
If what you are communicating needs to be guaranteed to never be crackable, you only need to use the oldest and most secure way of communicating before the days of internet and computers: short wave transmitted one time pad codes. The reason that number stations continue to operate is that it really is the best way to communicate/order under surveillance which almost certainly is happening in every embassy in non-fri…
Let’s take a step back here. Everybody has a different standard of privacy they want. There are different levels of trade offs they can make as they become more secure. What you’re describing is the top level of security but it’s not very convenient to use. It also uses private keys which makes establishing a new connection challenging. There are as I see it a few main security modes: stopping automated surveillance…
* anyone running a certain configuration
Bugs don't exist in a vacuum. They exist in a specific piece of software, which usually supports a specific feature (e.g. Flash, Microsoft Word, or TCP/IP).
Curious in more informed opinions, but it seems unlikely there's a large universe of zero days applicable to every configuration out there.
Consequently, a huge part of security is (and has always been!) limiting unnecessary code. Specifically, code accepting input from network connections.
Parent's point about crypto algorithms is a form of this: one reason they're so secure, and proveably so, is because they have extremely limited attack surfaces. They take this input, they produce this output.