The cat and mouse evolution between the sophistication of the pirates and the innovation in mitigation goes on. Geopolicity have a paper on pirate economics:
It’s more involved than one might think. And pirates have been upping the game and showing uncommon solidarity with their peers:
Discovery News also have an article on Piracy Attack Risk Surface (PARS), a model developed by the US Navy to predict piracy hotspots:
I still find it somewhat difficult to believe that amazingly, piracy has returned as a facet of our modern lives (1307_pirate_song).