Worrying, and that's an understatement if I'm being honest here. because oh boy you had better believe that the likes of the Russian and Chinese military are certainly not in the 'early stage of trying to understand' how to attack weapon systems using cyber methods. What's more, while the press and politicians alike seem to have become obsessed with the Russian cyber threat that might just be a mistake. According to an analysis of cyber-attacks across 2018 so far, security giant Crowdstrike says that China has now overtaken Russia as being the sponsor of most nation-state attacks against the West. Nor can I forget last week's National Cyber Security Centre (NCSC) annual review which revealed that in two years it has repelled an average of 10 cyber-attacks per week, 1,167 in total, and mainly from state-sponsored threat actors. Ciaran Martin, the NCSC CEO, not only says that nation-state actors constitute "the most acute and direct cyber threat" to the UK but he expects the country to be tested by a Category 1 attack in the years ahead. I understand that the NCSC was a key player when it came to providing advice for how best to secure the Queen Elizabeth and the new F-35 stealth fighter airplanes that will populate it.
https://www.forbes.com/sites/daveywinder/2018/10/21/royal-navys-biggest-warship-hms-queen-elizabeth-in-new-york-to-sink-cybersecurity-threats/#576df7e83866