What do ancient Roman generals, modern hackers, and Bitcoin investors all have in common? They rely on cryptography! In this course, you'll trace the history of secret codes from the Caesar cipher to the algorithms securing your messages and bank accounts today, getting hands-on experience cracking and creating ciphers along the way. You'll then dive into the world of blockchain and cryptocurrency, exploring how technologies like Bitcoin have challenged modern finance norms, and build and mine your own blockchain. You'll also tackle one of the most pressing challenges of our time: protecting your data and staying private in a digital world where your personal data is constantly being collected and sold. No prior experience required, just curiosity and a willingness to think like a codebreaker.