What is Post-Quantum Cryptography? Education What is Post-Quantum Cryptography? 14 min read What Cryptography Actually Protects Before we talk about "post-quantum" anything, it helps to understand what cryptography does for you right now, every single day, without you ever thinking about it. When you check your bank balance on your phone, cryptography prevents the person sitting next to you at the coffee shop from seeing your account number. When your doctor sends your blood test results to a specialist, cryptography keeps that data private as it crosses the internet. When a company stores its customer database, cryptography makes sure that a hacker who steals the hard drive gets a pile of unreadable noise instead of millions of credit card numbers. Cryptography is not just about passwords or spy movies.…