In the world of security, everything comes down to trust; sooner or later you have to trust something. Often, this something is a human. While we are busy building advanced cryptosystems that will survive the heat death of the universe, sooner or later, digging down layer by layer, you get down to a human and their limited memory. While we may build software, hardware, and other systems to protect this chain of trust, it almost always ends with a human.
