[ButchDriveshaft]

I'm relatively uninformed in this area, but I assume it was a proposal for an exploitation path. "Box-IFE-ICE-SATCOM" would most likely be a plan meaning exploiting and escalating privileges from the actual passenger's client interface or in-seat screen(box), escalating to the in flight entertainment system (IFE), to the inter-communications system (ICE), and finally to the Satellite Communications system (SATCOM). Not sure how realistic it is, because I know really nothing about info-sec with regard to aircraft, but it's no different than planning something like web app/service vulnerability -> database -> backend systems.