Back during the Iraq war the video feeds from drones and such were not encrypted, and people published some as a result. IIRC it was because there was not enou

Back during the Iraq war the video feeds from drones and such were not encrypted, and people published some as a result. IIRC it was because there was not enough capacity on military sats, and the commercial sats used for this didn't have the necessary functionality. That's not to say that command and control functions were unauthenticated and unencrypted. But I suspect that older satellites -both American as well as not-American- are vulnerable, especially commercial ones predating modern cryptography, and since it takes a long time for modernity to filter through to specialized kit like satellites, I suspect that commercial satellites from before 2010 are generally vulnerable. American military satellites, I suspect, have been fairly secure for longer, though I have no specific knowledge, only an expectation that the NSA would have done their part to protect American assets in space.