Hahahahahah...hack this hack that...its all possible.
There must be some 1337 haxors out there that can hack into anything. I myself don't know jack on hacking, though I do understand it is basically exploiting security loopholes.
tThis incident with the RIAA basicaly shows and proves the insecurities of today's networks, and just how vulnerable any website or netowrk is. Must be hard to be the security manager for a big backbone company...lots of stress I assume.