That's precisely the point. The reasons that are being given "oh noes! the terrists might attack a satellite!" are complete and utter bull**** when these vehicles aren't even reaching orbit.
Let alone the fact that even if they were in orbit the limited fuel these craft have means that it is still
extraordinarily unlikely that they would be able to create an intercepting orbit with a satellite. (they'd have to manually do all of the calculations based on memorized orbital data, flightplan, and cross-referencing it with the starfield since the navigation software wouldn't be like the HUD of a videogame showing all of the millions of km away satellites that don't have anything to do with your flightplan)
Even then, worst case scenario:
Orbiting spacecraft is hijacked by the passenger, pilot is killed, satellite is rammed.
We lose a man, a spacecraft, and a satellite. Yes it's sad, but 400m dollars later a more up to date satellite is there.
Hell if anything these people should be encouraging terrorists to be on these flights as a method of decommissioning old com sats

The problem is we have people making decisions that have an idiot-child like view of space where astronauts zip around at will as soon as they break the atmosphere.
Yes, some security measures will be needed. But as of this moment the
reasons for putting it on the current generation of space tourist craft is wrong. The reason should be 'protecting the pilot' not 'protecting satellites' as it's the pilot that would be in danger. Just using a no-fly list is a bandaid solution as well as opposed to creating an actual standard for spaceflight.