Don’t look up: There are sensitive internal links in the clear on GEO satellites.
Nice talk on geostationary satellites and how heir data links are often not encrypted. It’s astounding, as this relates to critical infrastructure, internal corporate and government communications, your private communication, and so on. Fortunately, after disclosure, most of this traffic has been encrypted.
[The talk] (https://media.ccc.de/v/39c3-don-t-look-up-there-are-sensitive-internal-links-in-the-clear-on-geo-satellites#t=449) also gives a good overview of how to reproduce their setup.