James Pavur has some interesting papers on various types of satellite hacking, from using ML to determine that some "space debris" might actually be hidden spacecraft [0] to VSAT security [1] to Cyber Antisatellite weapons [2], and other interesting stuff [3].

[0]:https://ora.ox.ac.uk/objects/uuid:9af9771d-74cd-49f3-88e3-f3...

[1]:http://www.cs.ox.ac.uk/files/11922/Pavur%20et%20al%20A%20tal...

[2]:https://ora.ox.ac.uk/objects/uuid:6e4194fa-474b-41cb-81fa-db...

[3]:https://www.cs.ox.ac.uk/people/publications/date/James.Pavur...

Note: I'm not associated with Dr. Pavur in any way other than being fascinated by some of his papers and Defcon presentations.