Oh, you can go ahead and say it. Eliohann was frelling psycho because of that datajack.
Oh, and to answer the OP: I reckon they can get certain pieces of cyber, but off all the creatures on God's green earth, they're the ones most closely tied to magic, IMO, and the notion of cyber for dragons just doesn't make a lot of sense to me. Even a little bit of cyber can throw off the balance of a magical creature's existence.
I mean, hell, if a simple datajack drives a dragon insane...and it did...can you imagine what some of the truly invasive stuff would do?
Yeah, you can do it...but why?!