Most common sats are very easy to find and track. Amateur astronomers log and track lots of secret sats all the time, most orbits are known fairly accurately (not enough to target them). Tracking via radar is pretty easy, it can also be done optically as well. It is extremely easy.
Disabling them is a whole other thing. Unless the sat is in very low orbit, its relatively safe. Asat weapons are only useful in the very low orbit. Temporary spy/coms sats etc. The US has so many, and many different orbits that trying to blind the us is a silly game to play. China might remove any low orbit sat it finds particularly annoying
It is much easier to gain control of a sat than it is to hit it with a missile (not that either is easy).
Alright, and what if China is using one of their high altitude aircraft with a nukemissile strapped to it to a shoot it onto the path of a passing sat? would the blast not destroy the intended target?
Or is there not a way to use laser to target sats?
I am pretty sure that its complex to achieve but imo i believe that US, EU, Russia and China can pull this off in some way, the skill, tech and cash flow is there so reason enough to believe that those sats fly around under a false security idea.
Let me put it this way, if we can put a man on the moon then i am pretty sure that killing a few sats childs play. given the tech we have available on earth.