The modern warfare will definitely use cyber space to attack any government/country. Attackers can paralyze an economy by attacking vital servers/data centers which are used for almost all services such as water/electricity/gas/internet supply. We should keep in mind that the modern societies are using IoT, AI, n-Society, e-Governement etc. and the usage of these technologies becoming more and more wide-spread.
Many developed countries maintain an army of “Cyber Soldiers” to monitor the net-traffic and identify malicious attacks targeting government networks. Sri Lanka has more than sufficient IT graduates we hire and train to be Cyber Soldiers.
~ Tunga Randeniye