We always hear about "hacking" (or cracking) banks, websites or the like. Nothing really "important" like centrals, or even satellites (like TV channels). Those we only see in movies - but are they possible? Could one crack a TV satellite, or something like that? Or is it really impossible/too secure?
If it is possible though, what skills would be needed to do it? I'm sure it doesn't take just nmap and SQL injections to enter that kind of network, does it?
I heard those kind of infrastructures relied on SCADA systems and needed special programming to be exploited: what programming languages would be needed then?