The Best Security Against Quantum Attack Isn’t Quantum Key Distribution
Every day, billions of people connect to the internet. When you log on to your favorite website, mitre.org for example, you can be quite safe in assuming that what you get is the real MITRE website and not a random server pretending to be mitre.org to steal information. You can also safely assume that you are the only one who can log on to your bank account and access all the information contained in it.