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Chaos in Cloudflare’s Lisbon office: securing the Internet with wave motion

Cloudflare is now using a wall of waves in our Lisbon, Portugal office to create entropy and strengthen Internet security, turning liquid chaos into secure, unpredictable encryption.

League of Entropy: Not All Heroes Wear Capes

Everything from cryptography to big money lottery to quantum mechanics requires some form of randomness. But what exactly does it mean for a number to be randomly generated and where does the randomness come from?