Semicolon Security on Instagram: "How did Julius Caesar send secret DMs in 58 BC? 🏛️📜 Before modern encryption, there was the Caesar Cipher. It’s a substitution technique where each letter in the text is “shifted” down the alphabet by a certain number of places. Simple by today’s standards, but back then? It was revolutionary for military security. ⚔️ Have you ever tried writing your own secret codes?"