. https://www.maritime-executive.com/blog/maritime-meets-cyber-security
blog article
As of October 2019, to the best of my knowledge, there has not been a single, dedicated hacking attack against a vessel at sea by malicious actors. While there have been rumors  specifically one from an American telco provider in 2016 that hackers have teamed up with pirates to track high value cargoes, there has been no firm evidence. Equally, the dire warnings from some quarters of ships having their navigation systems hacked so they can be directed to ports where pirates or criminal gangs could then ransack them have so far proven to be little more than interesting worst-case scenarios. Once you begin to dig in to the logistics of such a criminal enterprise, it quickly falls apart. After all, it requires the use of a pirate-friendly port or harbor deep enough to accommodate the hijacked vessel as well as a significant number of personnel to offload cargoes, crew and so on. DAVID RIDER READ MORE