Turns out, multi-million dollar yachts are no more secure than anything else out there:
The ease with which ocean-going oligarchs or other billionaires can be hijacked on the high seas was revealed at a superyacht conference held in a private members club in central London this week.
Murray, a cybercrime expert at BlackBerry, was demonstrating how criminal gangs could exploit lax data security on superyachts to steal their owners’ financial information, private photos and even force the yacht off course.
I’m sure it was a surprise to the yacht owners.
from Yacht Security