Tbf, most satellites will probably rely on their comms channel being protected more than the software itself having defensive countermeasures. So if you can get into the c&c channel you probably have mostly free rein.

Ukraine just did so and got blocked when hacking it to fly over Russia

the Guardian

Ukrainian military’s access to Starlink satellite internet suddenly restricted

Launch of Russian ballistic missiles on Ukraine, with no US warning, coincides with outage of Starlink managed by Musk’s SpaceX

satellites used to bring me movies. now they bring me internet

i give it two months

I agree with you that satellites make it much easier to monitor the population, and, for that matter, even to interfere quite directly in many people's lives... However, I believe that in more remote areas, far from urban centers, internet satellites, for example, can provide a means of communication that could save people's lives. I could be wrong, but there doesn't seem to be an effective, decentralized alternative for communication from many of these locations. As for hacking a satellite, it might not be as big a problem as it seems. There are many other technologies that, if hacked, could be far more destructive.

Hahaha .... 😆 😂 😆

This sounds like a fun challenge