It is not just the frequency of the cyber-attacks, but also the severity can be critical, for example the Port of Nagoya in Japan that had to shut down operations for more than three days after a ransomware attack. In addition, new critical vulnerabilities were published in major hardware and software commonly used by shipping companies: just in the last month we saw new critical vulnerabilities in major brands of firewalls, routers, internet browsers (practically all of them), operating system
