Plausibly, there is no real monitoring of co-orbiting bodies in space. If there aren't cameras pointed at every location of the sattelite (why would their be?) you could place a small kill device nearby to avoid the need to shoot down the satellite in the future.
Satellites are flimsy things, all one would need to do is break the mirror/telecom array to stop satellite guided weapons.
Satellites are flimsy things, all one would need to do is break the mirror/telecom array to stop satellite guided weapons.