This Was Once Illegal. Now it Makes Your Messages Unreadable.

For 2,500 years the most powerful people alive fought one problem: how to send a message no one else can read, even after it's been stolen. Here's how encryption actually works, and how you can make every message you send unreadable to any company, hacker, or government, for free. From Mary, Queen of Scots losing her head over a broken cipher, to the scholar who first cracked codes everyone called unbreakable, to the software that was once classified as a weapon, this is the real history of cryptography and what it means for your privacy right now. You'll see how to turn the apps you already use into encrypted channels you control, why "harvest now, decrypt later" is a problem today, and the one method even a quantum computer can never break. ⏱️ Chapters 00:00 The cipher that cost a queen her life 01:17 Why every "unbreakable" code eventually breaks 03:29 The two mistakes that got Mary killed 06:18 Why your texts and emails aren't private 08:40 What the dark web gets right about encryption 10:29 The fix: what you should do 12:34 The secrets you should keep on paper 13:51 Does any of this survive quantum? 16:53 What to actually do, step by step 🔧 Set up PGP yourself (the tutorial from the video) Mailvelope (browser, for Gmail / Outlook webmail): https://mailvelope.com/ GPG Suite (Mac, for Apple Mail): https://gpgtools.org/ Thunderbird (built-in encryption, all platforms): https://www.thunderbird.net/ Quantum-safe PGP setup with GnuPG: https://akmatori.com/blog/gnupg-post-... 📚 Sources PGP and the crypto export fight: https://en.wikipedia.org/wiki/Pretty_... Export of cryptography from the US: https://en.wikipedia.org/wiki/Export_... Mary, Queen of Scots and the Babington Plot: https://en.wikipedia.org/wiki/Babingt... Al-Kindi and frequency analysis: https://en.wikipedia.org/wiki/Al-Kindi Crypto AG / Operation Rubicon: https://www.washingtonpost.com/graphi... ANOM / Operation Trojan Shield (FBI): https://www.fbi.gov/news/stories/fbi-... The one-time pad: https://en.wikipedia.org/wiki/One-tim... Shor's algorithm: https://en.wikipedia.org/wiki/Shor%27... NIST post-quantum standards (2024): https://csrc.nist.gov/news/2024/postq... CISA Quantum Readiness: https://www.cisa.gov/sites/default/fi... GnuPG: https://gnupg.org/ 🔮 My Consulting: Post-quantum security & cryptography advisory → Learn more https://www.lamarrlabs.com/ 🧠 My Newsletter: → LaMarr Labs: Biweekly notes on the post-quantum transition (PQC, timelines, what to do next). https://lamarrlabs.substack.com/ → Addie LaMarr: Cybersecurity + tech writing (threats, tools, and the future of the internet). https://addielamarr.substack.com/ 📘 My Course: Zero to Cyber Hero: a step-by-step roadmap into cybersecurity → Start here https://addie-clark.mykajabi.com/zero... 🖇️ Let's Connect:   / addie-clark