One of the Secrets Guarding the Secure Internet Is a Wall of Lava Lamps
Cloudflare provides security and domain name services for
of the most prominent sites on the web. The company has built a solid reputation for its secure
Prolific YouTuber Tom Scott visited the home of the lava lamps for this video that explains why a bunch of cheap lava lamps play an integral role for a company that protects around 10 percent of HTTP and HTTPS requests.
The most simple explanation is that a lava lamp is a great way to generate randomness. Coding just isn't great at generating random numbers because, at its heart, code requires a system to mimic chaos. The best encryption has a truly random key so it's more difficult for a bad actor to guess how to break the cipher. Cloudflare videotapes its wall of colorful constantly morphing lava lamps and translates that video information into unique cryptographic keys. You might think that someone could just arrange the same lava lamp specifications and video camera to start picking apart the security company's keys but that's simply not the case.
[ Tom Scott ]